Owner`s manual | Garmin 170 GPS Receiver User Manual

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Page 1
GPSCOM
170
Owner’s
Manual &
Reference
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Page i
Software Version 2.02 or above
© 1997 GARMIN Corporation
1200 E. 151st Street, Olathe, KS USA 66062
Tel: 913-397-8200 or 800-800-1020
Fax: 913-397-8282
Web Site Address: www.garmin.com
GARMIN (Europe) LTD
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, U.K. SO51 9AQ
Tel: 011-44-1794-519944
Fax: 011-44-1794-519222
All rights reserved. No part of this manual may be reproduced or transmitted in
any form or by any means, electronic or manual, including photocopying and
recording, for any purpose without the expressed written permission of
GARMIN.
Information in this document is subject to change without notice. GARMIN
reserves the right to change or improve its products and to make changes in the
content without obligation to notify any person or organization of such changes
or improvements.
GARMIN, AutoLocate, AutoStore, AutoZoom, GPSCOM, PhaseTrac12, and
TracBack are all trademarks of GARMIN Corporation and may not be used without its expressed permission.
April 1997 Part #190-00093-00 Rev. D Printed in USA.
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Page ii
IMPORTANT!
The Telecommunications Act of 1996, effective February 8, 1996, provides the FCC discretion
to eliminate radio station license requirements for aircraft and ships. At the present time, you
do not need an individual license to operate the GPSCOM 170 aboard your private vessel in
many circumstances. To find out the specific details on whether you are exempt from licensing, please see FCC Fact Sheet PR 5000 or contact the FCC at 1-800-322-1117.
Note that no license is required for a portable radio used only as a backup on a vessel which
already has a station license per FCC 506 Instructions dated 1993.
If a marine license is required or desired, contact the FCC at 1-800-322-1117 to request form
506, Application for Ship Radio Station License.
The FCC also has a fax-on-demand service to provide forms by fax at 1-202-418-0177.
The GPSCOM 170 owner accepts all responsibility for obtaining the proper licensing before
using the transmitter.
WARNING! This transmitter will operate on channels/frequencies that have restricted use in the United States. The channel
assignments include frequencies assigned for exclusive use of the
U.S. Coast Guard, use in Canada, and use in International
waters. Operation in these frequencies without proper authorization is strictly forbidden. For frequencies/channels that are
currently available for use in the U.S. without an individual
license, please contact the FCC Call Center at 1-888-CALL-FCC.
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Page iii
INTRODUCTION
GPSCOM 170
OWNER’S MANUAL
Packing List
Before getting started, check to see that your GARMIN GPSCOM 170
package includes the following items. If you are missing any parts, please
contact your dealer immediately.
• GPSCOM 170 Unit
• Trickle Charger/AC Adapter
• Flex Whip Com Antenna
• Belt Clip
• Quick Reference Card
• Carrying Case
• Owner’s Manual
• Wrist Strap
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INTRODUCTION
Cautions
CAUTION
The GPS system is operated by the government of the United States, which is
solely responsible for its accuracy and maintenance. The system is subject to
changes which could affect the accuracy and performance of all GPS equipment.
Although the GPSCOM 170 is a precision electronic NAVigation AID (NAVAID),
any NAVAID can be misused or misinterpreted and therefore, become unsafe.
Use the GPSCOM 170 at your own risk. To reduce the risk of unsafe operation, carefully review and understand all aspects of this Owner’s Manual and
thoroughly practice operation using the simulator mode prior to actual use.
When in actual use, carefully compare indications from the GPSCOM 170 to all
available navigation sources including the information from other NAVAIDs,
visual sightings, charts, etc. For safety, always resolve any discrepancies before
continuing navigation.
NOTE: This device meets requirements for Part 15 of the FCC limits for Class B
digital devices for home or office use. It has been tested for compliance with all
necessary FCC standards. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there
is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to other equipment, which can be
determined by turning the equipment off and on, the user is encouraged to try
and correct the interference by relocating the equipment or connecting the
equipment to a different circuit than the affected equipment. Consult an authorized dealer or other qualified service technician for additional help if these
remedies do not correct the problem. Operation is subject to the following conditions: (1) This device cannot cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause
undesired operation. The GPSCOM 170 does not contain any user-serviceable
parts. Repairs should only be made by an authorized service center.
Unauthorized repairs or modifications could void your warranty and your
authority to operate this device under Part 15 regulations.
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Page 1
INTRODUCTION
Table Of
Contents
SECTION ONE
Introduction
Unit Description/Keys and Controls . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Keys and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
SECTION TWO
Getting Started
Acquiring Satellites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Navigation Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-13
VHF Transceiver Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-17
SECTION THREE Reference
Satellite Status and Position Pages . . . . . . . . . . . . . . . . . . . . . . . . .18-21
Creating, Using, and Editing Waypoints . . . . . . . . . . . . . . . . . . . .22-28
Using the VHF Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29-38
GOTO, MOB, and TracBack Navigation . . . . . . . . . . . . . . . . . . . . .39-41
Route Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42-47
Navigation Guidance Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48-55
Menu Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
System Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57-63
Appendix A—Initializing the Receiver . . . . . . . . . . . . . . . . . . . . . .64-66
Appendix B—Accessories and Installation . . . . . . . . . . . . . . . . . . .67-69
Appendix C—VHF Channel List . . . . . . . . . . . . . . . . . . . . . . . . . .70-71
Appendix D—Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72-73
Appendix E—Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74-75
Appendix F—Map Datums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76-77
Appendix G—Time Offset Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Appendix H—Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79-81
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Page 2
introduction
Unit
Description
BNC Antenna
Connector
Volume
Control
Squelch
Control
Top View
The GPSCOM 170 combines a 12 parallel channel GPS receiver with a 5 watt
marine VHF communications transceiver in
a convenient handheld package. A keypad
located on the front of the unit provides
control of the navigation and communication functions. The 16/9 key allows for one
button selection of channel 16 or 9. Knobs
for controlling squelch, power and volume
are located on top of the unit. The microphone is located in the lower left speaker
area.
Flex Com
Antenna
Internal GPS
Antenna
Channel
Selection Arrow
Keys
Map Scale
Zoom Keys
Speaker
Arrow Keypad
Microphone
LCD Display
Front View
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Page 3
introduction
Unit
Description
Backlight
Button
Power/Data/Ext
Spk/Ext Mic
Cable
Connector
PTT Switch
Transmit Power
Button
External GPS
Antenna Connector
H/L
H/L
Charger/AC Adapter
Connector
Removable
Battery Pack
Side Views
The backlight button, transmitting power/override button, charger/AC adapter connector, and push-to-talk (PTT) switch are located on the left side of the unit. The connector for
the external GPS antenna and power/data/ext speaker/ext mic cable are located on the right
side. A removable Ni-Cad battery pack powers the unit and attaches to the back. See
Appendix B for instructions on installing and removing the battery pack.
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Page 4
introduction
Keys and
Controls
K
U
D
Use the UP and DOWN arrow keys to select alphanumerical characters and
menu choices, and to move the field highlight from field to field.
LR
Use the LEFT and RIGHT arrow keys to move the selected character field, and
to move the highlight from field to field. The left arrow key is also used to clear
a selected field.
U
ZOOM
D
4
Use the two-speed ARROW KEYPAD to enter data. Press on a particular
arrow key once to scroll through data options slowly. Press and hold down an
arrow key for faster scrolling.
The MAP SCALE ZOOM keys select the desired map range from 0.2 to 320
nm.
E
The ENTER key confirms data entry and on-screen responses. This key also
activates highlighted fields to allow data entry.
K
The MARK key captures a position and displays the mark position page.
G
The GOTO key displays the GOTO waypoint page, allowing you to select the
destination waypoint.
P
The PAGE key scrolls through the main data pages in sequence and returns the
display from a submenu page to a main page. It also displays the message
screen when a message alert appears.
B
The MOB key performs the man overboard function. This marks the current
position, and always displays your current range and bearing from this position.
Q
The QUIT key returns you to a previous page, or clears data entry and restores
a data field’s previous value.
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Page 5
introduction
Keys and
Controls
U
CHAN
D
The CHANNEL SELECTION arrow keys are used to select channels. The channel
number can be increased or decreased one with each press, or if held will continue to
increase or decrease the number as long as the key is held.
C
The GPSCOM key lets you choose between the main GPS and main communication
pages.
N
The 16/9 key selects channel 16 or 9 for immediate use.
T
The DUAL/TRI key activates dual and tri watch monitoring.
W
The WX/CH key places the unit in weather channel receive mode.
S
The SCAN key puts the unit into the “all scan” or the “memory scan” mode.
M
The MEM key accesses the memory setup page which enables you to
program channels into memory.
The ON/OFF/VOLUME control turns the unit on and off and adjusts the volume
level.
The SQUELCH control eliminates receiver background noise and allows only received
transmissions to be heard.
The PUSH-TO-TALK (PTT) switch activates the GPSCOM 170 transmitter on the
active frequency.
The BACKLIGHT button illuminates the arrow keypad and LCD Screen through four
levels of backlighting (three levels of brightness and off).
H/L
The TRANSMIT POWER BUTTON selects one or five watts of transmit power.
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Getting
Started
Acquiring
Satellites
Important!
Make sure you charge the
Ni-Cad battery pack for 14
hours before using your
GPSCOM 170 to ensure
optimum capacity and performance. Note: When
charging the battery pack,
turn the unit off to ensure a
full charge. Complete
instructions on charging the
pack are in Appendix B.
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Getting Started
The GPSCOM 170 is a powerful navigation and communication tool that offers mariners a host of advanced
features that help make boating safer and more efficient.
The getting started tour is designed to quickly guide you
through basic features and functions of the unit. Once
you’ve completed the tour and become familiar with the
main pages and features of the unit, refer to the reference
section for complete instructions on performing specific
tasks and functions.
The getting started tour assumes you have initialized
the unit according to the instructions given in Appendix
A, and have not changed any of the default settings. If
you have changed any settings, the descriptions and pictures used may not match your configuration.
Powering Up
To turn the GPSCOM 170 on:
1. Turn the VOL control clockwise.
The welcome page will be displayed while the unit
conducts a self test. Once testing is complete, the welcome page will be replaced by the satellite status page
and the GPSCOM 170 will begin acquiring satellite data.
Satellite Status Page
The signal strength bars on
the satellite status page give
you an indication of what
satellites are visible to the
receiver, whether or not
they’re being used to calculate a position fix, and the
signal quality.
6
The satellite status page provides a visual reference of
satellite acquisition and receiver status, with a signal
strength bar graph and a satellite sky view in the center
of the page. The accuracy of your position is shown in the
upper right hand side of the page.
The satellite sky view and signal strength bars give
you an indication of what satellites are visible to the
receiver and whether they are being tracked. Satellites,
labeled with numbers and letters, are placed on the page
indicating their position in the sky.
The signal strength bars show how strong the signal
is from each satellite being tracked: The taller the bar, the
stronger the signal. For more information on the satellite
status page, see page 18.
You’ll know you have a fix when a 2D or 3D status
appears in the status field or the receiver automatically
transitions to the position page. If you encounter difficulty acquiring satellite signals, see Appendix A.
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Getting
Started
Position Page
Speed Over Ground
Position Page
Graphic
Compass
Tape
Altitude
Current Track
Time of Day
Position
Coordinates
VHF Status Field
The position page shows where you are, what direction you’re heading and how fast you’re going. The
graphic compass at the top of the page indicates the
direction you’re moving. The four user-selectable data
fields below the compass tape show your current course
and speed over ground, along with a resettable trip
odometer and altitude display. Your current latitude and
longitude, along with a 12/24-hour clock, appear at the
bottom of the page.
The position page also features a resettable trip
odometer to keep track of
your distance traveled.
The VHF status field appears at the bottom of every
page. It displays (from left to right) the current channel,
band of operation, operating mode, and output power
level. The VHF status field elements are discussed in
detail in the reference section.
#
!
The graphic compass display is designed to show your current track and does not serve as a true magnetic compass
while you’re standing still.
In addition to displaying
your position coordinates,
the position page shows
your track and speed over
the ground.
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Getting
Started
Marking a
Position
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Page 8
Marking a Position
Now that you’ve acquired a position, let’s mark it as a
waypoint for future reference.
1. Press the K key to capture and hold your posi-
tion.
#
!
To mark a position, you must have obtained a 2D or 3D
fix, or have the receiver in simulator mode. If you try to
mark a position without a position fix, you will be alerted
with a ‘No Position’ message.
The mark position page will appear, showing the captured position and a default 3-digit waypoint name, 001.
Let’s change the name to something more meaningful,
like ‘HOME’.
1. Use the arrow keypad to move the field highlight from
the ‘SAVE?’ field to the ‘Waypoint’ field.
To save a waypoint with the
three digit name, simply
press ENTER on ‘SAVE’.
2. Press E and the left arrow key to clear the
default waypoint name.
3. Press and hold the up arrow key to scroll through the
alphabet until the letter ‘H’ appears.
4. Press the right arrow key once to move the character
highlight to the next character space.
5. Repeat steps 3 and 4 until the word ‘HOME’ is displayed.
6. Press E to complete entry of the name.
7. Press the down arrow key once to return the field highlight to the ‘SAVE’ field.
8. Press E to confirm that you want to save the position as a waypoint named ‘HOME’.
The arrow keypad is used
for all data entry. Use the
UP and DOWN keys to
select letters, numbers, or
menu options; use the LEFT
and RIGHT keys to move
the cursor forward or backward along the line.
8
The mark position page will now be replaced by the
position page (the page displayed prior to pressing
MARK. The ‘HOME’ waypoint is now stored in the
GPSCOM 170’s memory, and will remain there until you
manually remove it or clear the receiver’s memory. For
more on waypoint management, see pages 22-28.
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Page 9
Using the Position and Map Pages
Now that you’ve marked a position, it’s time to take a
brisk walk using the position and moving map pages to
watch your every move. You will need to walk for at least
the time stated in the below steps.to get a much better
indication of how the GPSCOM 170’s steering guidance
and mapping features work.
Getting
Started
Position and
Map Pages
1. Walk in a straight line for 3-4 minutes at a fast pace and
watch the position page. You can time your distance
with the on-screen clock.
Map Page
The direction you are moving (your track) and your
speed are displayed on the upper part of the screen, just
below the graphic compass display. The latitude, longitude and approximate altitude of your position–along
with a resettable trip odometer–are continuously displayed in the middle of the page, with the time of day displayed below.
Now let’s change the display to the moving map page
and watch the track log of our walk:
1. Press the P key to change from the position page
to the map page.
The map page displays your
present position as a diamond icon and provides a
real time graphic ‘breadcrumb’ display of your track
right on screen.
The moving map’s default
setting is track up orientation. ‘Track up’ means that
your current direction of
travel is always up (or
towards the top of) the
screen. It can also be set for
north up, or desired track up
orientation by using the map
setup page.
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Getting
Started
Moving Map
Page
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Page 10
Moving Map Pages
The GPSCOM 170’s next page, the moving map page,
shows your movement as a track log, with your present
position shown as a diamond icon in the center of the
map. You’ll notice the black square below the diamond,
which represents the position you just created (‘HOME’),
and the line between the two, which shows your track.
Nearby waypoints are represented as squares, with
the waypoint name listed above the square. When you
want to change the map scale, simply use the up and
down arrow zoom keys to select the desired scale.
1. Now turn 90º to your right and continue walking at a
fast pace for another 2-3 minutes. Notice how the display changes, always keeping the direction you are
moving at the top of the map.
Going To a Waypoint
When you want to change
the map scale, simply use
the up and down arrow
zoom keys to select the
desired scale.
Once you’ve stored a waypoint in memory, you can
use the GPSCOM 170 to guide you to it by performing a
simple GOTO. A GOTO is really nothing more than the
receiver drawing a straight-line course from your present
position to the destination you’ve selected. To see how it
works, let’s try navigating back to our starting position,
the HOME waypoint.
To select a GOTO destination:
1. Press G.
2. The G waypoint page will appear, displaying all
the waypoints in memory in alphabetical order.
3. Use the arrow keypad to highlight the ‘HOME’
waypoint.
4. Press E to confirm that you want to navigate to
the displayed waypoint.
The GOTO waypoint page
allows you to select your
destination from a list of all
available waypoints in the
GPSCOM 170’s memory.
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Page 11
Getting
Started
Using the Highway Page
Bearing to
Waypoint
Distance to
Waypoint
Using The
Highway Page
Speed Over
Ground
Track Over
Ground
Course
Deviation
Scale
Graphic
Highway
Velocity
Made Good
Estimated
Time Enroute
Pointer to selected
waypoint
The GPSCOM 170’s highway page provides graphic
steering guidance to a destination, with an emphasis on a
straight–line course to the desired waypoint and the distance and direction you are off course. The bearing and
distance to a waypoint, along with your current track and
speed, are displayed at the top of the screen, with your
estimated time enroute (ETE) and velocity made good
(VMG), or the rate you are closing in on your destination,
shown at the bottom.
Your present position is represented by the square in
the center of the course
deviation scale.
As you head toward your destination, the middle section of the screen provides visual guidance to your waypoint on a moving graphic ‘highway’. The moving arrow
just below the course deviation scale always points to
your selected waypoint relative to the direction you are
moving.
Your present position is represented by the diamond
in the center of the course deviation scale. The line down
the middle of the highway represents your desired track.
As you navigate toward a waypoint, the highway will
actually move, indicating the direction you’re off course,
relative to the position square on the CDI scale. To stay
on course simply steer toward the center of the highway.
As you approach a waypoint, a horizontal ‘finish
line’ will move toward the
bottom of the highway.
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Page 12
Getting
Started
Compass &
Message Page
Message Page
Once you are one minute
from the destination, an
arrival message will appear
on the message page.
If you do get off course by more than 1/5th of the
selected CDI range, the exact distance you are off course
will be displayed where the CDI scale normally appears.
As you approach a waypoint, a horizontal ‘finish line’ will
move toward the bottom of the highway. When the finish
line reaches the CDI scale, you’ve arrived at your destination. Whenever the unit has something it needs to tell
you, a message indicator will flash on screen. When you
are less than one minute from reaching your HOME waypoint, the message box will begin flashing.
1. To view a message, press P when the message
indicator appears.
2. Press P to return to the previous page.
There’s also a compass page to helps provide better
steering guidance where straight–line navigation is not
possible.
To select the compass page:
1. While viewing the highway page, press E twice.
Compass Page
The GPSCOM 170 will also
provide steering guidance
with a graphic compass.
The compass page will now become the displayed
navigation page. This page provides a directional pointer
to your destination by using a rotating compass display to
show direction of travel. It provides better steering guidance at slower speeds for travel with many directional
changes.
To switch back to the highway page:
12
1. Press E twice.
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Page 13
Getting
Started
GPS Page Sequence
Now that you’ve arrived ‘HOME’, let’s take a minute to
see how the GPSCOM 170’s main GPS pages work
together. The unit features five main pages, which are
linked together in a chain. You can quickly scroll through
the pages in either direction using the P and Q
keys.
GPS Page
Sequence
1. Press P to scroll through the five main pages in
sequence.
2. Press Q to scroll through pages in the opposite
direction.
Satellite Page
Position Page
Map Page
Highway Page
Menu Page
Menu Page
You’ve already seen the first four pages in action by
acquiring satellites, marking a position and navigating to
a destination. The last page available from the main GPS
page sequence is the menu page, which provides access
to the GPSCOM 170’s waypoint management, route,
track log and setup features. The 11 submenus are divided into categories by function.
To select a submenu from the menu page:
1. Press Por Q until the menu page appears.
2. Use the arrow keypad to highlight the submenu you
want to view.
3. Press E to access the submenu.
You’ve now gone through the basic operation of the
navigation portion of your new GPSCOM 170. Now let’s
move on to using the VHF radio.
Use the arrow keypad to
select a submenu from the
menu page. Press ENTER
to access the selected submenu.
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Getting
Started
Using the VHF
Transceiver
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Page 14
Using the VHF Transceiver
The first step in using the VHF transceiver is to make
sure the volume and squelch controls are set correctly for
proper reception.
Volume
Control
Squelch
Control
Important!
We strongly recommend
obtaining a marine radio
user’s guide such as
“Maritime Radio User’s
Handbook” published by
the RTCM (Radio
Technical Commission
For Maritime Services),
Washington, D.C., to
ensure proper radio operation and protocol.
Improper usage can result
in fines levied on
mariners by the FCC.
1. Turn the VOL control clockwise to turn the unit on.
2. Rotate the SQL control fully counterclockwise. This
state is known as “squelch off”. Increase the volume
to achieve a comfortable listening level.
3. Slowly turn the SQL control clockwise and stop slightly
past the point where the noise disappears. This condition is known as the “squelch threshold”.
If the knob is turned past this point, weak signals
may not be received. No noise and no signals are received
until a signal with sufficient strength is received that
exceeds the squelch threshold. When the GPSCOM 170
is in receive mode, ‘RX’ is displayed in the VHF status
bar.
VHF Communication Pages
To move back and forth between the GPS and VHF
pages, press C. There are three com VHF pages in a
continuous loop: channel definition, com setup, and
memory bank. Press C to exit the GPS pages and
enter the com pages. Try scrolling through the com pages
by pressing P You can also scroll in the opposite
direction or return to a previous page by pressing Q.
The function of each of the com pages is discussed in
detail in the reference section.
P
The current channel will
always be displayed at the
bottom left of every page.
Channel Page
Com Setup Page
Q
14
Mem Bank Page
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Page 15
Selecting a Channel
The GPSCOM 170 operates on all U.S., Canadian,
and International Marine VHF radio channels.
Getting
Started
Transmitting
To select a channel from any page:
1. Use the UP and DOWN channel selection arrow keys
to select the desired channel. The channel number will
increase or decrease with each press–or if held, will
continue to change the number as long as the key is
held. The selected channel will always be displayed at
the left hand side of VHF status bar.
Transmitting
To transmit:
1. Press the push-to-talk (PTT) button. ‘TX’ appears in the
VHF status bar when the PTT button is pressed. Speak
slowly and clearly into the microphone. Hold the unit
about 1/2 to 1 inch from your mouth.
Important!
Certain channels are set aside
to be used by authorized stations for specific purposes,
depending on the type of vessel (commercial or non-commercial). Full familiarization
with channel usage is essential when selecting a channel.
2. Release the PTT button when you are finished
speaking.
Tips on Transmitting
• Transmitting without an antenna connected to the
GPSCOM 170 may damage the unit. See Appendix
B for instructions on installing and removing the
antenna. The GPSCOM 170 will not transmit using
external power without the battery pack. Make sure
the battery pack is installed.
• If the PTT button is held in for more than 35 seconds, the transmitter will automatically shut off.
The message ‘Stuck PTT’ will also be displayed on
the message page.
• The GPSCOM 170 gives you the option of transmitting using 1 watt or 5 watts of power.
Transmitting at 1 watt power is a nice option so that
short-range conversations won’t interfere with a
large number of boaters. Transmitting at 1 watt also
prolongs battery life.
An ‘H’ will be displayed in
the right–hand side of the
VHF status field for 5 watt
operation, and an ‘L’ for 1
watt .
To switch between high and low power:
1. Press the transmitting power button to switch between
low and high power.
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Getting
Started
Selecting
Channel 16/9
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Page 16
Selecting Channel 16 and 9
The GPSCOM 170’s channel 16/9 button provides
quick access to channel 16 or 9.
To select channel 16:
1. Press N.
To select channel 9:
1. Press N again.
Tips on Using Channel 16 and 9
• Channel 16 is used for emergency purposes and for
initially contacting (hailing) another vessel.
• The use of channel 16 for hailing must be limited
to initial contact only. Calling should not exceed 30
seconds, but may be repeated 3 times at twominute intervals.
Channel 16 is used for
emergency purposes and for
initially contacting (hailing)
another vessel.
• In areas of heavy radio traffic, congestion on channel 16 resulting from its use as a hailing channel
can be reduced significantly in U.S. waters by using
channel 9 as the hailing channel for non-emergency
communications.
• Before making contact with another vessel, refer to
the RTCM marine radio user’s guide to select an
appropriate channel for communications after initial contact.
Selecting a Weather Channel
The GPSCOM 170 receives 10 weather channels,
including all 7 National Weather Service channels in and
around the U.S., and most Environment Canada Weather
Radio broadcast stations.
To select a weather channel:
A ‘W’ is displayed next to
every selected weather
channel.
1. Press W. ‘W’ will be displayed next to the selected
channel in the VHF status bar.
2. Use the UP and DOWN channel selection arrow keys
to select the desired weather channel.
3. Press W to return to regular channels.
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Page 17
Dual Watch
Dual Watch scans between channel 16 and the last
channel that was selected. It’s handy when you need to
monitor channel 16, but also want to listen to another
channel for traffic.
Getting
Started
Dual Watch
To start dual-watch:
1. Press T. The unit will scan between channel 16
and the last selected channel, stopping on the channel
that has radio traffic. Once the radio traffic has
stopped, the unit will resume scanning. To cancel dual
watch press T twice or the PTT button once.
Congratulations! You’ve just completed the getting
started tour! You now know enough about the GPSCOM
170 to go out and have some fun with it.
We strongly recommend that you read on and
explore the reference section, which contains a closer
look at all of the exciting features of the GPSCOM 170.
To turn the GPSCOM 170 off:
1. Turn the VOL control counterclockwise.
Thank you for choosing the GARMIN GPSCOM 170.
We hope it will make your boating safer and more
enjoyable.
Dual watch scans between
channel 16 and the last
selected channel.
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Reference
Satellite Status Page
Satellite Status
Page
Operating
Mode
Battery Voltage
Estimated
Position Error
Satellite Sky
View
Satellite
Numbers/Letters
Signal Strength
Indicator Bars
Satellites in view but not
currently in use (Q & 9)
will be displayed in reverse
video, with a corresponding
‘hollow’ signal strength bar.
Once a satellite in view is
usable for positioning, the
satellite number will
change from reverse video
and the signal strength bar
will become solid.
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The satellite status page displays the status of various
receiver functions. The status information will help you
understand what the GPSCOM 170 is doing at any given
time, and tell you whether or not the receiver has calculated a position fix.
Sky View and Signal Strength Bars
The satellites are identified by letters and numbers.
The sky view and signal strength bars give you an indication of what satellites are visible to the receiver, whether
or not they are being used to calculate a position fix, and
the signal quality. The sky view in the center of the page
shows a bird’s-eye view of the position of each satellite
relative to the receiver’s last known position. The outer
circle represents the horizon (north up); the inner circle
45º above the horizon; and the center point a position
directly overhead.
When the receiver is looking for a particular satellite,
the corresponding signal strength bar will be blank and
the sky view indicator will remain highlighted in reverse
video. Once the receiver has found the satellite, a hollow
signal strength bar will appear, indicating that the satellite has been found and the receiver is collecting data
from it. The satellite number or letter in the sky view will
also change from reverse video to normal presentation.
As soon as the GPSCOM 170 has collected the necessary
data to use the satellite for positioning, the hollow bar
will become solid.
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Reference
Receiver Status
Receiver status is indicated at the top left of the
screen, with the current horizontal accuracy (estimated
position error, in feet or meters) at the top right. The status will show one of the following conditions:
Receiver Status
Searching— the GPSCOM 170 is looking for any
available satellites in view.
AutoLocate— the GPSCOM 170 is initializing and
collecting new almanac data. This process can take 3
to 5 minutes.
Acquiring— the receiver is collecting data from
available satellites, but has not collected enough data
to calculate a 2D fix.
2D Navigation— at least three satellites with good
geometry have been locked onto and a 2-dimensional position fix (latitude and longitude) is being calculated. ‘2D Diff’ will appear when you are receiving
DGPS corrections in 2D mode.
3D Navigation— at least four satellites with good
geometry have been locked onto, and your position is
now being calculated in latitude, longitude and altitude. ‘3D Diff’ will appear when you are receiving
DGPS corrections in 3D mode.
A ‘Poor Coverage’ status
will appear if the receiver
has lost the satellites
required to compute a fix.
Make sure the internal
antenna is not covered and
has a clear view of the sky.
Poor GPS Coverage— the receiver is no longer
tracking enough satellites for a 2D or 3D fix.
Not Usable— the receiver is unusable, possibly due
to incorrect initialization or abnormal satellite conditions. Turn the unit off and back on to reset.
Simulator— the receiver is in simulator mode.
EZinit Prompt
The satellite status page also provides access to the
EZinit prompt whenever a position fix has not been calculated (the unit must be in searching, AutoLocate,
acquiring, simulator or poor coverage mode). This allows
you to manually reinitialize the unit (see Appendix A for
instructions), and is useful if you have travelled over 500
miles with the receiver off and you know it must be initialized to your new position. The GPSCOM 170 will
automatically offer the EZinit prompt after 10 minutes of
unsuccessful satellite acquisition.
If you travel more than 500
miles with the receiver off,
you may have to reinitialize
it to your new location. To
access the EZinit prompt,
press ENTER from the status page before the receiver
has acquired any satellites.
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Reference
Battery Voltage Indicator
Screen
Backlighting
IMPORTANT!
Using the screen backlighting can greatly affect battery life. If you’re using
your GPSCOM 170 primarily in daylight hours,
you should keep the backlight timeout at the default
15 second setting.
The satellite status page displays current battery
voltage for the Ni-Cad battery pack. When using the
Ni-Cad pack, any voltage above 7.2 indicates a fully
charged condition. You should charge the battery pack
when the voltage is between 5.8 and 7.2. At 5.8 volts,
you will get a low battery voltage message. At 5.5
volts, the Com and GPS functions shutoff. It is
normal to see a drop in voltage when transmitting.
The trickle charger/AC adapter supplied with the
GPSCOM 170 converts line voltage to the DC voltage
necessary to operate the unit. The AC adapter also slowly recharges the Ni-Cad battery pack at a rate of 14 hours
for a full recharge. Make sure you charge the
Ni-Cad battery pack for 14 hours before using your
GPSCOM 170 to ensure optimum capacity and performance. When charging the battery pack, be sure to turn
the unit off to ensure a full charge.
Screen Backlighting and Contrast
If you want to see the display at night, you have to
turn on the ‘backlight’ (which is a very small light bulb
behind the screen). The bulb lights the screen display for
a user-defined interval (the default is 15 seconds) after
every keystroke. There are three levels of light intensity.
When backlighting is on, a bulb icon will appear in the
upper right–hand corner of the display. To adjust the
length of time the backlighting will stay on, refer to
system setup in the reference section.
To turn the screen backlighting on:
1. Press the backlight button. Cycle through the three levels of backlight by pressing the backlight button.
To turn the screen backlighting off:
Screen contrast is adjustable
from the satellite status
page.
1. Press the backlight button. Whenever the backlighting
is off, the bulb icon disappears from the screen.
To set the screen contrast:
1. Use left and right arrow keys to adjust the bar scale
for the desired contrast and press E.
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Reference
Position Page
The GPSCOM 170’s position page shows you where
you are, what direction you’re heading and how fast you
are going (up to 99.9 mph), and is most useful when you
are travelling without an active destination waypoint. A
graphic compass tape at the top of the page displays your
cardinal heading (while you’re moving), with your current track and speed over the ground indicated below.
Position Page
The rest of the page shows your present position in
three dimensions (latitude, longitude and altitude). The
units of measure for speed, distance, position and altitude
are all user-selectable through the navigation setup menu
(see page 59). The 12/24 hour clock and time offset
options are available from the system setup menu
(see page 57).
Trip Odometer
The position page also features a resettable trip
odometer to measure the total distance travelled
while navigating.
To reset the trip odometer:
1. Highlight the ‘TRIP’ field.
The speed displayed on the
position page may fluctuate
at slow speeds (or when
you’re standing still).
2. Press E followed by the left arrow key.
3. Press E to finish.
Altitude Display
When the GPSCOM 170 is acquiring satellites or
navigating in the 2D mode, the last known altitude will
be used to compute your position. If the altitude shown
is off by several hundred feet, you can manually enter
your altitude for greater accuracy. Note that GPS altitudes
can fluctuate due to errors.
To enter your altitude:
1. Highlight the ‘ALT’ field. Press E to begin entry of
your altitude.
2. Use the arrow keypad to enter a value in each character field and to move to the next character position.
To reset the trip odometer,
highlight the trip field and
press ENTER. Use the
LEFT arrow key to clear the
distance field and press
ENTER to confirm.
3. Press E to confirm the altitude.
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Marking and Saving Waypoints
Marking &
Saving
Waypoints
Knowing your present position is only part of any
navigation equation. You also need to keep track of
where you’ve been and where you are going. Waypoints
serve as electronic markers that let you keep track of
starting points, destinations, navaids and any other
important position.
The GPSCOM 170 allows you to mark, store and use
up to 250 waypoints. A waypoint position can be entered
by taking an instant electronic fix or by manually entering a coordinate or range and bearing in reference to an
existing waypoint. If you try to mark a waypoint without
having a position fix, you’ll be notified with a ‘No GPS
Position’ message.
To mark your present position:
1. Press K to capture your position.
The GPSCOM 170 will
save new waypoints with a
default three–digit name.
The mark position page will appear, showing the captured position and a default 3-digit waypoint name.
To change the default position name:
1. Press the up arrow key twice to move the field highlight from the ‘SAVE?’ field to the name field.
2. Press E to begin entry of the name. Pressing the
left arrow key will clear any existing data.
3. Use the arrow keypad to enter a value in the appropriate character field, and to move to each
character position.
4. Press E to confirm the waypoint name. The field
highlight will move to the ‘route number’ field.
If you’d like to add this waypoint to a route:
You may add a new waypoint to the end of any storage route by entering the
desired route number in the
route field before saving the
waypoint.
1. Press E.
2. Use the arrow keypad to enter a route number.
3. Press E to confirm the route number.
4. Press E again to save the waypoint.
If you do not want to add this waypoint to a route:
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1. Highlight the ‘SAVE?’ field and press E.
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Reference
Waypoint Submenus
The GPSCOM 170 has three waypoint submenu
pages that let you manage a large number of waypoints
quickly and efficiently. The nearest waypoints, waypoint
list and waypoint definition pages are accessed through
the menu page.
Waypoint
Submenus
To select a waypoint submenu page:
1. Press P or Q until the menu page appears.
2. Highlight the waypoint submenu page you want to use.
3. Press E to display the submenu page.
4. To return to the menu page, press P.
Nearest Waypoints Page
The nearest waypoints page shows the nine nearest
waypoints that are within 100 miles of your present position, with the bearing and range noted for each waypoint.
During an emergency, the nearest waypoints page can
give you the closest points of safety in your area. The
nearest waypoints page will also let you retrieve a waypoint definition page or GOTO a selected waypoint right
from the list.
To select a waypoint submenu, highlight the desired
option and press ENTER.
To review the waypoint definition page of a highlighted waypoint from the list:
1. Press E.
To return to the nearest waypoint page (when the
‘DONE’ field is highlighted):
1. Press E.
To GOTO a highlighted list waypoint:
1. Highlight a listed waypoint.
Nearest Waypoints Page
2. To select a highlighted nearest waypoint as a destination, press G.
3. Once the GOTO waypoint page appears, press E
to confirm the selected waypoint as your destination.
The compass heading (BRG)
and distance (DST) to the
nine nearest waypoints are
updated continuously.
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Waypoint List Page
Creating &
Using
Waypoints
The waypoint list page provides you with a complete
list of all waypoints currently stored in the unit. The total
number of used and empty waypoints is indicated above
the waypoint list. From the waypoint list page, you can
retrieve a waypoint definition page, delete all userdefined waypoints, or GOTO a selected waypoint.
If a waypoint is currently used in a route, the lowest
route number will be indicated to the left of the waypoint
name.
To review the waypoint definition page of a highlighted list waypoint:
1. Press E.
To return to the waypoint list page (with the ‘DONE’
field highlighted):
1. Press E.
Waypoint List Page
The total number of used
and available waypoints is
indicated at the top of the
page.
To GOTO a list waypoint:
1. Use the arrow keypad to scroll through the list and
select a waypoint.
2. To select a highlighted waypoint as a destination,
press G.
3. Once the GOTO waypoint page appears, press E
to confirm the selected waypoint as your destination.
To delete all user-defined waypoints:
1. Use the arrow keypad to move the cursor highlight to
the ‘delete all waypoints’ field and press E.
A warning page will appear, asking if you are sure you
want to delete all user-defined waypoints and routes. If
you want to continue and delete:
Deleting all user waypoints
will also delete all routes
stored in memory.
1. Press the left arrow key to highlight the ‘Yes’ field.
2. Press E.
3. Press the left arrow key to return to the menu page.
If you do not want to delete all waypoints:
1. Press E with the ‘No?’ field highlighted.
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Reference
Waypoint Definition Page
Waypoint
Name
Position
Coordinates
Creating &
Using
Waypoints
Waypoint
Comment Field
Reference
Waypoint
Bearing from
Reference
Waypoint
Distance From
Reference
Waypoint
Function
Prompts
The last of the three waypoint submenu pages is the
waypoint definition page. This page lets you create new
waypoints manually, or review and edit existing waypoints. To create a new waypoint manually, you’ll need to
know its position coordinates or its distance and bearing
from an existing waypoint.
To create a waypoint by entering coordinates:
1. If a waypoint is currently displayed in the name field,
highlight ‘NEW?’ and press E. Then press the left
arrow key to clear the name field.
Wpt Definition Page
Use the waypoint definition page to review, rename
or delete stored waypoints
and to create new waypoints manually.
2. If a waypoint is not displayed, move the cursor to the
name field and enter the new waypoint’s name.
3. Use the arrow keypad to enter your waypoint name
and to move to the next character position.
4. Press E to confirm the waypoint name. The position field will now become highlighted, with the receiver’s last known position shown, if one exists.
5. Press E to begin entry of the position.
6. Use the arrow keypad to enter your position, and to
move to each character field.
7. Press E to confirm and save your coordinates.
The default waypoint comment (UTC date and time of
creation) will appear, and the highlight will move to
‘DONE?’.
8. Press E to return to the menu page.
After selecting entry of a
‘NEW’ waypoint, an empty
waypoint screen will appear.
Note: You must enter a
name for the waypoint or
the highlight will not
advance to the next field.
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Reference
Reference Waypoints
Creating &
Using
Waypoints
To re-define an existing
waypoint’s position coordinates from the waypoint
definition page, simply
highlight the DST field and
press ENTER. Use the
LEFT arrow key to set the
distance to 0.00, and press
ENTER to confirm.
The old coordinates will be
replaced by the coordinates
of your present position
(you must have a valid
2D– or 3D– position fix).
To create a new waypoint manually without knowing
its position coordinates, you’ll need to enter its bearing
and distance from an existing waypoint, or your present
position. The GPSCOM 170 will then calculate the position coordinates for you.
To create a new waypoint by referencing a known
waypoint:
1. Highlight the ‘NEW?’ field and press E.
2. Enter the name of your new waypoint.
3. Press E to confirm the waypoint name. The position field will now become highlighted, with the
receiver’s last known position shown.
4. Move the cursor to the reference field.
5. Press E to begin entry of the reference waypoint.
Leave the reference field blank to use your present
position.
6. Use the arrow keypad to enter the waypoint name.
7. Press E to confirm your entry.
8. Enter the bearing and distance of your new waypoint
from the reference waypoint. Remember to use the
E key to begin entry and confirm each field. The
coordinates will be calculated and saved for your new
waypoint.
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9. Press E (with the ‘done’ field highlighted) to
return to the menu page.
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Editing Existing Waypoints
The waypoint definition page also allows you to
change the name, coordinates, comment or reference
waypoint field for a stored waypoint.
To edit the name, coordinates, comment, or reference
waypoint field:
Creating &
Using
Waypoints
1. Highlight the field you want to edit. Press E to
begin entry in the selected field.
2. Enter your new data.
3. Press E to confirm your changes.
Waypoint Comments
Each waypoint stored in the GPSCOM 170 has a
user-defined 16 character comment field. The default
comment is the UTC date and time of the waypoint’s
creation.
To change or add a comment:
1. Highlight the comment field. Use the left arrow of the
arrow keypad to clear the comment field.
2. Press E to begin entry of your comment.
3. Enter the comment and press E to confirm.
The waypoint comment
field will automatically
assign the date and time of
creation to the waypoint
comments field. You may
enter a 16–character user
comment at any time.
Renaming and Deleting Waypoints
The rename and delete function fields are located at
the bottom left of the waypoint definition page (you’ll
need to use the arrow keypad to move the field highlight
out of its standard up-and-down scrolling sequence).
To access the rename function from the waypoint
definition page, highlight
the ‘RENAME?’ prompt and
press ENTER.
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To rename a stored waypoint:
Creating &
Using
Waypoints
1. Highlight the ‘RENAME?’ field and press E.
2. Enter the new waypoint name and press E.
3. Press E to confirm your changes.
To delete a stored waypoint (you can’t delete a route
waypoint without deleting it from a route):
To delete a waypoint, confirm the ‘Yes?’ prompt.
Route or active waypoints
may not be deleted until
they are removed from the
route or the GOTO has
been cancelled.
1. Highlight the ‘DELETE?’ field, press E, and
select ‘YES’.
2. Press E to delete the waypoint.
Scanning Waypoints
As you manually enter a waypoint’s name, the
GPSCOM 170’s waypoint scanning feature will automatically display the first numerical or alphabetical match of
the character you have entered to that point. This helps
eliminate the need to enter a waypoint’s complete name.
To scan waypoints from a waypoint field:
1. Highlight the waypoint name field and press E.
2. Press the left arrow key to clear the name field.
The waypoint scanning feature will offer the first waypoint that matches the character or characters you
have entered to that point.
28
3. Use the keypad to scroll through waypoints.
4. If you have more than one waypoint that begins with
the same letter or number, you must use the right
arrow key to move to the next character positions as
needed. Only the first character match is listed for
each character set.
5. Once you’ve found the desired waypoint, press E.
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VHF Communication Pages
To move back and forth between the GPS and VHF
pages, press the C key. There are three com VHF
pages in a continuous loop: channel definition, com
setup, and memory bank. Press C to exit the GPS
pages and enter the com pages. Try scrolling through the
com pages by pressing P You can also scroll in the
opposite direction or return to a previous page by
pressing Q.
VHF Com
Pages
P
Channel Page
Com Setup Page
Memory Bank Page
Q
Press P repeatedly until you access the com setup
page.
Com Setup Page
The com setup page allows you to do the following:
• Change the mode of operation
• Customize the scanning setup
• Set the timeout feature (scanning delay)
• Select the band of operation
• Change the call channel
Com Setup Page
• Access the line of sight calculator page
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Three operating modes are available:
VHF Operating
Modes
• Com On— (Default) Enables all VHF communication features.
• Com Off— Disables all VHF communication features. Use this mode if you only want to use GPS or
if battery life is a concern.
• Weather Alert— Accesses the weather alert audio
page. Muting the weather broadcast audio will cause
the GPSCOM 170 to remain silent until the National
Weather Service activates an alert tone.
To select an operating mode:
1. Highlight the ‘Com Mode’ field and press E.
2. Use the arrow keypad to select an option, and press
E to confirm your choice.
Selecting a com mode on the
com setup page.
Selecting the weather alert mode option accesses the
weather alert page where you can choose to mute the
weather broadcast audio. The receiver will unmute and
remain unmuted once a severe weather tone is received
from the NWS.
To mute the weather broadcast audio:
1. Highlight the ‘Com Mode’ field and press E.
2. Use the arrow keypad to select ‘Weather Alert?’ and
press E. The weather alert mode submenu will
appear with the audio field highlighted.
3. Press E to select ‘Mute’.
4. Press C to exit the weather alert mode page.
Weather Alert Page
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Scanning Setup
The com setup page also provides for scanning setup.
The GPSCOM 170 scans, which means it automatically
listens to a number of channels in rapid succession, hesitates on an active channel until the conversation stops,
and then moves on to the next channel.
Scanning Setup
& Modes
The GPSCOM 170 can be programmed to scan all
channels for the band you have selected, or scan a bank
of memory channels.
To select a scanning type:
1. On the com setup page, highlight ‘SCAN’ field and
press E.
2. Use the arrow keys to select the desired memory bank
or ‘ALL CHANNELS’.
3. Press E to confirm the selection.
4. Press S to activate the scanning.
5. Press S or PTT to stop scanning.
Selecting ‘ALL CHANNEL’
scanning.
Scanning Modes
The GPSCOM 170 has two scanning modes: normal
and priority.
Normal scanning (the default setting) scans through
all channels/memory channels in sequence. Channel 16 is
checked in sequence as with the other channels.
Priority scanning scans through all channels/memory
channels in sequence while constantly monitoring channel 16. When a signal is detected on channel 16, the unit
pauses on channel 16 until the signal disappears. When a
signal is detected on a channel other than 16, channel 16
will be monitored every 2 seconds.
To select priority scan:
1. Highlight ‘COM MODE’ field and press E.
The GPSCOM 170 in priority scan mode.
2. Use the arrow keypad to select ‘Priority’ and press
E.
3. Press E to confirm the selection.
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Scan Timeout
Changing Call
Channels
After each transmission has ended, you may want to
enter a 2-3 second delay, allowing you to hear both sides
of a conversation. This delay is put on all channels.
To enter a delay time:
1. Highlight the ‘TIMEOUT’ field and press E.
2. Use the arrow keypad to select a desired delay time up
to 99 seconds and press E.
Selecting an Operating Band
Selecting an operating band selects a pre-programmed
group of channels which covers operation in U.S.,
Canadian, or International waters. The default setting for
band operation is USA.
To change the operating band:
1. Highlight the ‘BAND’ field and press E.
The GPSCOM 170 is initially set for U.S. operation.
2. Use the arrow keypad to select USA, Canada, or INT’L
and press E.
3. Press E to confirm the selection.
Calling Channel
The calling or hailing channel is the channel used to
initiate a call to another vessel, typically Channel 16 or 9.
You can change the call channel on the com setup page.
Note: When the call channel is changed, the new call
channel becomes the second channel in both dual and tri
watch.
To change the call channel:
1. Highlight the ‘CALL CHANNEL’ field.
Changing the call channel
on the com setup page.
32
2. Use the UP or DOWN channel selection keys to select
a new channel and press E to confirm.
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VHF Line-of-Sight Calculator Page
The GPSCOM 170’s line-of-sight calculator page can
be used to estimate the transmitting and receiving distance between the unit and another station.
Regardless of transmitter power, VHF marine radio’s
transmitting and receiving range is generally limited by
“line of sight.” This means that you must be located such
that land masses, the curvature of the earth, or anything
else that would limit your ability to see in a straight line
does not substantially come between your antenna and
the antenna you are communicating with.
Line-Of-Sight
Calculator
Page
If you know the height of your vessel’s receiving
antenna and the height of the transmitting antenna at the
station you desire to receive from, the probable range of
communications can be automatically calculated using
the line-of-sight calculator page.
To access the line of sight calculator page from the
com setup page:
1. Highlight the ‘LINE OF SIGHT’ field and press E.
Line-Of-Sight
Calculator Page
The top section of the line of sight calculator page
displays the transmitting antenna height field and receiving antenna height field. The bottom of the page displays
the line-of-sight calculation field.
To determine an approximate line of sight distance:
1. Highlight the ‘Transmitting Antenna Height’ field and
press E.
2. Using the arrow keypad, enter the known height of
your antenna (the default value is 5 ft., which is the
approximate height from the deck to bottom of the flex
antenna with the radio being held in your hand. After
you enter a height, press E.
IMPORTANT!
Antenna height, more than
any other factor, is responsible for determining how
far you can transmit. An
antenna which is mounted
up high can “see” farther
over the horizon.
3. Highlight the ‘Receiving Antenna Height’ field and
press E.
4. Enter the known height of the receiving antenna using
the arrow keypad and press E.
5. The approximate line of sight distance (the probable
range of communication) will appear in the ‘LINE OF
SIGHT’ field.
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Memory Bank Page
Memory Bank
Page
The memory bank page lets you store five groups of
channels for custom scanning, complete with user comments. The memory channels are partitioned into
“banks”, specifically 5 banks of 10 channels each. The
memory banks are numbered 1-5 and displayed at the
top of the page. From the memory bank page you’ll be
able to perform the following functions:
• Select a numbered bank
• Enter user comments
• Enter channels into memory
• Copy a bank’s contents to another bank
• Clear (delete) a bank
From the com page group, press
until the memory bank page appears.
P
repeatedly
To select a numbered bank:
Memory Bank Page
1. Highlight the ‘MEMORY BANK’ field and press E.
2. Use the arrow keypad to select the desired bank.
To enter user comments:
1. Highlight the comment field and press E. The first
character position of the comment field is highlighted.
Press the left arrow key on the arrow keypad to clear
the field.
2. Enter a character using the arrow keypad. Once the
desired character is selected, move to the next character position using the right arrow on the arrow keypad.
You can enter up to 16 characters.
3. Press E to confirm the entry.
Entering memory bank user
comments.
34
If an error is made during entry, use the right or left
arrow keys on the arrow keypad to move to the position
containing the incorrect character. Enter the correct character and press E when you are finished.
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To enter channels:
1. Highlight the first blank ‘CHANNEL’ field and press E.
2. Enter a channel of your choice using the arrow keypad and
press E. The appropriate band for the channel you
have selected will be displayed next to the channel number.
Note: You cannot enter weather channels into memory, nor
can you enter channels of different bands in the same bank.
Memory Bank
Page
Copying and Clearing
The bottom of the memory bank page displays the
‘COPY TO’ and ‘CLEAR’ fields which allow you to copy a
list to another bank or clear a list completely.
To copy a list to another bank:
1. Highlight the ‘COPY TO’ field and press E.
2. Enter the bank number that you want the currently displayed list copied to and press E.
Individual or groups of channels within a bank cannot be
copied.
To remove (delete) all channels from a memory bank:
1. Highlight the ‘CLEAR’ field and press E. A warning
page will appear asking you if you are sure you want to
remove all the channels from the bank.
You cannot enter weather
channels into memory, nor
can you enter channels of
different bands in the same
bank.
2. Select ‘YES?’ and press E.
Memory List Editing
Once a list has been entered into a bank, it can be edited at any time.
To edit a list:
1. Use the arrow keypad to select the channel you want to
edit and press E.
An on-screen menu of editing choices will appear, with
options for selecting, inserting, removing or changing the
highlighted channel. Use the arrow keys to select among
the editing choices and press E.
‘CLEAR BANK’ warning
page.
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Channel
Definition Page
• SELECT— To select the active channel and display
the channel usage page, highlight the ‘SELECT’
prompt and press E.
• INSERT— To insert a new channel, highlight the
‘INSERT?’ prompt and press E.
• REMOVE— To remove the selected channel, highlight the ‘REMOVE’ prompt and press E.
• CHANGE— To replace the selected channel with a
new channel, highlight the ‘CHANGE’ prompt and
press E.
Channel Definition Page
The GPSCOM 170’s channel definition page reviews
lockout and usage information for the active channel.
Channel Definition
Page
The top section of the page displays the current
(active) channel number, mode of operation (simplex or
duplex), band of operation (USA, Canada, or
International)–(or ‘WX’ for a weather channel), and the
‘LOCKOUT’ field.
Channel Definitions
There is a maximum of three definition fields for each
channel, with the FCC’s default channel usage displayed.
If the designated usage for a channel should ever change
due to a change in regulations, you can change the definition accordingly.
To change a channel definition:
1. Highlight the definition field you want to change and
press E.
Changing a default definition setting.
36
2. Use the arrow keypad to scroll through the list of available definitions and press E to confirm the selection.
Just below the channel definition list is the
‘DEFAULT?’ prompt which allows you to return the channel definitions back to their original (default) settings.
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To return the definitions back to their default settings:
1. Highlight ‘DEFAULT?’ and press E.
The ‘DONE?’ prompt located below the ‘DEFAULT?’
prompt confirms any changes that were made and returns
you to the previously viewed page.
Channel
Lockout
To confirm changes made on the channel definition
page and return to the previously viewed page:
1. Highlight ‘DONE?’ and press E.
Channel Lockout
Channel lockout allows you to bypass a channel during scanning.
To lock a channel out:
1. Highlight ‘LOCKOUT’ and press E.
2. Use the arrow keys to select ‘YES’.
3. Press E to confirm.
Memory Page
4. To unlock a channel, repeat the steps above (except
select ‘NO’ in step 2).
Adding a channel to
memory bank 2 from the
memory page.
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Memory Page
Memory
Page/Tri Watch
The memory page (see sidebar, page 37) allows you
to easily add the active channel to a memory bank. It also
displays channel number, type (duplex/simplex), band
(US, Canada, International), and channel usage.
To select the memory page:
1. Press M.
To add a channel to memory from the memory page:
1. Highlight ‘Add to the ‘Memory Bank’ field and press
E. Select the desired bank number using the
arrow
keypad.
2. Highlight ‘SAVE?’ and press E. The channel is
now saved to the bank you selected.
Tri Watch
When the unit is in tri
watch mode, ‘TRI’ is displayed in the VHF status
bar.
IMPORTANT!
The GPSCOM 170 gives
you the option of transmitting using 1 watt or 5 watts
of power. Transmitting at 1
watt of power is useful
for short-range conversations and won’t interfere
with a large number of
boaters. Transmitting at 1
watt also prolongs battery
life. The VHF status bar
will display an ‘L’ when 1
watt is being used or an ‘H’
when 5 watts is selected.
In addition to dual watch scanning (see the getting
started section) a tri watch mode is available. Tri watch
scans between channel 16, 9 (or whatever the call channel is set to) and the last selected channel. This feature is
handy when you need to monitor channel 16 for emergency communication, but also want to listen to channel
9 for hailing calls, and a third channel for another purpose.
To activate tri watch:
1. Press T twice. The unit will scan between channel 16 , 9 and the last selected channel, stopping when
traffic is detected. Press T or PTT to cancel tri
watch.
Power Override
On certain channels, the FCC requires the transmitting power to be limited to, and remain at one watt (see
Appendix C). The default setting on these channels is one
watt and cannot be changed. There are also some one
watt ‘initial’ channels, in which the FCC allows the power
to be increased to five watts under certain cicumstances.
To switch to five watts:
38
1. Press the transmit power button which is located
below the PTT button.
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Selecting a GOTO Destination
The GPSCOM 170 provides four ways to navigate to
a destination: GOTO, MOB, TracBack and route navigation. The most basic method of selecting a destination is
the GOTO function, which lets you choose any stored
waypoint as the destination and quickly set a direct
course from your present position.
GOTO & MOB
Navigation
To activate the GOTO function:
1. Press G. The GOTO waypoint list, an alphabetical
list of all available waypoints, will appear.
2. Select the waypoint you want to navigate to (it may
already be highlighted).
3. Press E to confirm, or Q to stop selection of
a GOTO destination and return to the previous page.
Once a GOTO waypoint has been activated, the
GPSCOM 170 will provide steering guidance to the destination until either the GOTO is cancelled or the unit
has resumed navigating the active route (see page 46).
To cancel an active GOTO:
1. Press G.
Select a destination waypoint from the GOTO
waypoint list.
2. Use the arrow keypad to move the field highlight to the
‘CANCEL GOTO?’ prompt at the bottom of the page and
press E.
Man Overboard Function
The GPSCOM 170’s man overboard function (MOB)
lets you simultaneously mark and set a course to a position for quick response to passing positions (like the spot
where your hat blew overboard).
To activate the MOB mode:
1. Press G twice. The GOTO waypoint page will
appear with ‘MOB’ selected as the default destination.
2. Press E to begin MOB navigation.
The GPSCOM 170 will now guide you to the MOB
waypoint until the MOB GOTO is cancelled (see “cancel
GOTO” above). If you want to save the MOB waypoint,
be sure to rename it, because it will be overwritten the
next time a MOB is executed.
Once the MOB mode has
been activated, steering
guidance will be provided by
the compass or highway
page. Activating another
MOB will overwrite the previous MOB waypoint.
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TracBack Navigation
TracBack
Navigation
The third method of navigating to a destination is by
using the GPSCOM 170’s TracBack feature. The TracBack
function allows you to quickly and easily retrace your
path using the track log automatically stored in the
receiver’s memory. The advantage of the TracBack feature
is to eliminate the need to mark waypoints along the way
and manually create and activate a route back to where
you began your trip.
The TracBack route is created by reducing your current track log into a route of up to 30 waypoints, and activating an inverted route along those points. Once activated, a TracBack route will lead you back to the oldest track
log point stored in memory, so it’s usually a good idea to
clear the existing track log at the starting point of your
current trip (e.g. the dock) before you get started.
To clear the track log and define a starting point for a
TracBack route:
Clearing the log before you
get started will define the
position the TracBack function will return you to.
1. From the map page, press E. Highlight the
‘TRACK SETUP?’ option and press E. The track log
page will appear.
2. Use the arrow keypad to highlight ’CLEAR LOG’ and
press E.The clear log confirmation page will
appear. Highlight ‘YES’ and press E.
To activate a TracBack route:
1. From the map page, press E and highlight the
‘TRACK LOG’ option.
2. Press E to access the track log page.
3. Highlight the ‘TRACBACK?’ option and press E.
Highlight the ‘TRACBACK’
prompt and press ENTER to
begin TracBack navigation.
An on-screen status box will
monitor the progress of the
TracBack calculation.
40
Once the TracBack function has been activated, the
unit will take the track log currently stored in memory
and divide it into segments called legs. Up to 30 temporary waypoints (e.g., ‘T001’) will be created to mark the
most significant features of the track log in order to duplicate your exact path as closely as possible. A TracBack
route from your present position to the oldest track log
point will be created as the active route (the active route
page will appear), and provide steering guidance to each
waypoint back to the starting point of your track log.
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Tips on Using TracBack
To get the most out of the TracBack feature, remember the following tips:
• Always clear your track log at the exact point that
you want to go back to (trail head, truck, dock,
etc.). The ‘RECORD’ option on the track log setup
page must be set to the ‘Yes’ position.
TracBack
Navigation
• There must be at least two track log points stored in
memory to create a TracBack route.
• If there are not enough available waypoints in
memory to create a TracBack route, you will be
alerted with a ‘waypoint memory full’ message, and
the receiver will use any available waypoints to create a TracBack route with an emphasis on the track
log closest to the destination (the oldest track log
point in memory).
• If the ‘CRITERIA’ option on the track log setup page
is set to a time interval, the TracBack route may not
follow your exact path (keeping the criteria set to
automatic will always provide the best TracBack
route).
The TracBack feature will
navigate your track log
back to the oldest point in
the receiver’s memory.
• If the receiver is turned off or you lose satellite coverage during your trip, the TracBack route will simply draw a straight line between any point where
coverage was lost and where it resumed.
• If the changes of direction and distance of your
track log are very complex, 30 waypoints may not
be enough to accurately mark your exact path. The
receiver will then assign the 30 waypoints to the
most significant points of your track, and simplify
segments with fewer changes in direction.
• If you want to save a TracBack route, copy route 0
to an open storage route before activating another
TracBack. Activating another TracBack or storage
route will overwrite the existing TracBack route.
• Whenever a TracBack route is activated, the receiver will automatically erase any temporary waypoints (e.g., ‘T001’) that are not contained in routes
1-19. If there are temporary waypoints stored in
routes 1-19, the receiver will create any new temporary waypoints using the first three-digit number
available.
The track log will be divided
into segments with temporary waypoints to create
a route back to the beginning of the track log.
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Creating and Using Navigation Routes
The last form of navigating to a destination with the
GPSCOM 170 is by creating a user-defined route. The
route navigation feature lets you plan and navigate a
course from one place to another using a set of predefined waypoints. Routes are often used when it’s not
practical, safe or possible to navigate a direct course to a
particular destination (e.g., through a body of water or
impassable terrain).
Route
Navigation
Routes are broken down and navigated in smaller
segments called ‘legs’. The waypoint you are going to in a
leg is called the ‘active to’ waypoint, and the waypoint
immediately behind you is called the ‘active from’ waypoint. The line between the ‘active to’ and the ‘active
from’ waypoint is called the ‘active leg’.
ä
Waypoint 2
‘Active Leg’
(‘active to’ waypoint)
ä
ä
}
©
Waypoint 1
(‘active from’ waypoint)
Whenever you activate a route with the GPSCOM
170, it will automatically select the route leg closest to
your position as the active leg. As you pass each waypoint
in the route, the receiver will automatically sequence and
select the next waypoint as the ‘active to’ waypoint.
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Routes Definition Page
The GPSCOM 170 lets you create and store up to 20
routes of 30 waypoints each. Routes are created, copied
and edited through the route definition page, which is
accessed through the menu page.
Route
Navigation
To select the route definition page:
1. Press P until the menu page appears.
2. Highlight the ‘ROUTES’ option.
3. Press E to display the route definition page.
4. To return to the menu page, press P.
Comment
Field
Route
Number
Leg Distance
Desired
Track of Leg
Total
Distance
Copy Field
Function Prompts
The route number field is displayed at the top of the
page, with a 16-character user comment below. If no user
comment is entered, the field will display the first and last
waypoint in the route. The waypoint list in the middle of
the page accepts up to 30 waypoints for each route, with
fields for desired track and distance between legs. The
total distance of the route is indicated below the
waypoint list.
The bottom of the route definition page features several function fields which let you copy, clear, invert or
activate the displayed route. Routes 1-19 are used as storage routes, with route 0 always serving as the active route
you are navigating. If you want to save a route currently
in route 0, be sure to copy it to another open route, as it
will be overwritten by the next route activation.
If you’re heading out without a planned route, the
mark function can be used
to quickly create a route
back to your starting point.
Create a series of waypoints
along the way with the
mark key and save them to
an open route from the
mark position page. When
you’re ready to head back,
simply activate the route
you created in inverted
order.
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To create a route from the route definition page:
Route
Navigation
1. Highlight the route number field and press E.
2. Enter a route number and press E to confirm.
3. Press E to begin entry of a route comment. (Note
that the default [first and last waypoint] comment will
only appear if the comment field is blank.)
4. Enter your comment and press E.
5. Highlight the No. 1 waypoint field and press E.
6. Enter the first waypoint of your route and press E.
7. Continue entering the rest of your waypoints in order,
using the E key to start and confirm each field
entry. The list will automatically scroll down as
needed.
Enter each waypoint in the
order you would like to
navigate them. If you enter
a waypoint not stored in
memory, you’ll need to
define the position on the
waypoint definition page.
8. After you have entered all your waypoints, press
P.
Copying and Clearing Routes
The route definition page is also used to copy a route
to another route number. This feature is useful when you
make changes to the active (or TracBack) route and want
to save the route for future use.
To copy a route:
1. Highlight the route number field and press E.
2. Enter the route number to be copied and press E.
3. Highlight the ‘COPY TO’ field and press E.
4. Scroll through the available routes and select a destination route number. Only open routes will be available
as choices. Press E to copy the route.
To copy a route, select an
open storage route and
press the ENTER key. If you
select a route that is already
used, you’ll be alerted with
a ‘Route Full’ message.
44
5. Press P to return to the menu page.
To clear a route from memory:
1. Highlight the route number field and press E.
2. Enter the route number and press E .
3. Select the ‘CLR?’ prompt and press E.
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Clearing Routes (con’t.)
The clear route warning will appear, asking you to
confirm that you want to remove all waypoints from the
route.
Route
Navigation
1. Highlight the ‘Yes?’ field.
2. Press E to confirm your action.
3. Press P to return to the menu page.
Activating And Inverting Routes
After a route has been entered, it can be activated in its
defined sequence or inverted from the route definition
page. The process of activating or inverting a stored route
takes a storage route (routes 1-19) and copies it into the
active route (route 0) for navigation. The storage route is
now no longer needed and will be retained in its original
format under its existing route number.
This system allows you to have an active route that you
may edit during navigation and save as an entirely new
route from the original. You will have to copy the active
route to an unused storage route to save it, since new route
or TracBack activation overwrites route 0.
Clearing a route only
removes the waypoints from
the route selected. The waypoints used will remain in
the receiver’s memory.
To activate a route:
1. Select the route definition page and press E to activate the route number field.
2. Enter the route number to be activated and press E.
3. Move the field highlight to the ‘ACT?’ prompt and press
E.
Inverting a route allows you to navigate route legs in
inverted order without editing the original route.
To activate a route in inverted order:
1. Follow the steps above, but select the ‘INV?’ prompt and
press E.
To activate a route, highlight the ‘ACT?’ prompt and
press ENTER.
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Active Route Page
Route
Navigation
Once a route has been activated, the active route page
will appear, displaying the waypoint sequence of your
route with the estimated time enroute (ETE) at your present speed and distance to each waypoint. As long as you
are navigating an active route, the active route page will
become part of the main page sequence of the unit.
The active route page will also allow you to change
the ETE field to display desired track (DTK) or estimated
time of arrival (ETA) for each leg. In addition, you can
also clear or invert the active route.
To display DTK or ETA for each leg:
1. Highlight the estimated time enroute (ETE) field and
press E.
2. Use the up or down arrow keys to select ‘DTK’ or ‘ETA’
and press E.
Active Route Page
Whenever you have an
active route, the active route
page will appear in the
main page sequence after
the compass/highway page.
The active route page also allows you to clear (stop
navigating) or invert the active route without using the
route definition page.
To invert a route from the active route page:
1. Move the field highlight to the ‘INVERT?’ prompt.
2. Press E to invert the route.
To clear the active route from the active route page
and stop route navigation:
1. Select the ‘CLEAR?’ prompt.
2. Press E to clear the active route.
Editing Routes
Once a route has been created and stored, it can be
edited at any time, even if it is the active route.
To edit or review a route
waypoint from the active
route page, highlight the
desired waypoint and press
ENTER.
46
To edit a route from the active route page or the route
definition page:
1. Select the waypoint you want to edit and press E.
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Editing Routes (con’t.)
An on-screen menu of editing choices will appear,
with options for reviewing, inserting, deleting or changing the waypoint field highlighted. Use the up and down
arrow keys to select among the editing choices.
Route
Navigation
Once you’ve selected a waypoint from the route list,
choose a menu function:
1. To review the definition page for the waypoint, highlight the ‘REVIEW?’ prompt and press E.
2. To add a new waypoint that precedes the selected
waypoint, highlight the ‘INSERT?’ prompt and press
E.
3. To remove the selected waypoint, highlight the
‘REMOVE?’ prompt and press E.
4. To replace the selected waypoint with a new waypoint,
highlight the ‘CHANGE?’ prompt and press E.
Use the route waypoint editing instructions described
earlier for creating a route to complete your changes. If
you are editing the active route (route 0), copy your new
route version to an empty route to save it, because the
active route will be overwritten by a new route activation.
Use the on-screen menu to
select the desired editing
function.
If you add, delete or change the first or last waypoint
of a route, the default comment (first and last waypoint)
will automatically be updated after your changes.
On-Route GOTOs
At the beginning of this section, we mentioned that
the GPSCOM 170 will automatically select the route leg
closest to your position as the active leg. This will give
you steering guidance to the desired track of the active
leg. If you would prefer to steer directly to a route waypoint, you can perform an ‘on-route GOTO’ from the
active route page.
1. Highlight the desired route waypoint and press G.
2. Once the GOTO waypoint page appears, press E
to confirm the on-route GOTO waypoint.
Note that after you reach the on-route GOTO waypoint, the GPSCOM 170 will automatically resume navigating the rest of the route in sequence.
You can skip ahead to any
route waypoint by highlighting the desired waypoint
and pressing the GOTO key.
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Selecting a User-Defined Navigation Page
Navigation
Guidance
Pages
Once you’ve selected a GOTO destination or activated a MOB or route, the GPSCOM 170 will provide graphic steering guidance to the destination with one of two
navigation pages:
Highway Page
To switch the navigation
page to the compass page,
press ENTER twice.
Compass Page
•The highway page (the default navigation page) provides a graphic highway that shows your movement
relative to the desired course, with an emphasis on
your crosstrack error,(the distance and direction you
are off course.) The highway page is well suited for
boating and other activities with higher speeds and
straight–line courses to a destination.
•The compass page provides a directional pointer to
the destination, with a rotating compass graphic to
display your direction of travel. The compass page is
ideal for activities like trawling or entering a harbor,
and provides better steering guidance for slowspeed (e.g., walking) travel with many
directional changes.
To switch the navigation
page to the highway presentation, press ENTER twice.
48
Both pages provide a digital display of the bearing
and distance to the destination, your current speed and
track over the ground, and course deviation indicator
(CDI). You can select the desired navigation page at
any time.
To select the compass or highway page:
1. Press P until the current navigation page appears
and press E. An on-screen box will appear, with
the navigation page not currently in use highlighted as
the default.
2. Press E to switch the navigation screen.
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Using the Highway Page
The highway page also provides graphic steering
guidance to a destination, with a greater emphasis on the
straight-line desired course and the distance and direction you are off course. The bearing and distance to a
waypoint, along with your current track and speed are
displayed at the top of the screen, with your estimated
time enroute (ETE) and velocity made good (VMG, or the
rate you are closing in on your destination) at the bottom.
Bearing to
Waypoint
Highway Page
Distance to
Waypoint
Track Over
Ground
Speed Over
Ground
Destination
Waypoint
Graphic
Highway
Estimated
Time Enroute
CDI Scale
Velocity
Made Good
Pointer to Waypoint
As you head toward your destination, the middle section of the screen provides visual guidance to your waypoint on a moving graphic ‘highway’. The moving arrow
just below the course deviation scale always points to
your selected waypoint relative to the direction you
are moving.
Your present position is represented by the square in
the center of the course deviation scale. The line down
the middle of the highway represents your desired track.
As you navigate toward a waypoint, the highway will
actually move, indicating the direction you’re off course,
relative to the position diamond on the CDI scale. To stay
on course, simply steer toward the center of the highway.
If you do get off the desired course by more than
1/5th of the selected CDI range, the exact distance you
are off course will be displayed where the CDI scale setting normally appears. If you get too far off course (the
highway has disappeared), a message box will appear to
indicate what course to steer to get back on course.
In this example, the highway page indicates that you
are off course to the left.
Steer right to get back on
course. Notice the emphasis
of the highway page is on
the desired course.
If you get too far off course,
a message box will appear
to indicate what course to
steer to get back on course
most efficiently.
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Using the Compass Page
Compass Page
The compass page provides graphic steering guidance
to a destination waypoint. The bearing (BRG) and distance (DST) to the waypoint are displayed at the top of
the page, right below the destination waypoint field. The
distance displayed is always the straight-line distance
from your present position to the destination waypoint.
The bearing indicates the exact compass heading from
you to the destination.
Bearing to
Waypoint
Graphic
Compass
Pointer to
Waypoint
In this example, the compass page indicates that you
are traveling in a easterly
(100º) direction and the
destination waypoint is
northeast (25º) of your current direction of travel.
Track Over
Ground
Destination
Waypoint
Distance to
Waypoint
Speed Over
Ground
CDI Scale
The middle of the page features a rotating ‘compass’ that
shows your current cardinal heading while you’re moving
(track up), with a pointer arrow in the center to indicate the
direction of the destination relative to the direction you are
moving. The compass rose and pointer arrow combine to
show current direction and current destination at a glance.
The bottom of the compass page displays your current
track (TRK) and speed (SPD) over the ground, while the
CDI (course deviation indicator) scale shows how far you
are off course. The diamond in the center of the CDI scale
represents your present position, while the d-bar (the moving vertical line on the scale) indicates the direction and distance you are off the desired straight-line course.
In this example, the compass page indicates that you
are traveling in a westerly
(326º) direction and the
destination waypoint is
slightly north (359º) of your
current direction of travel.
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To stay on course, steer toward the d-bar until it is centered on the position diamond. The default setting of the
CDI scale is +/- 0.25 miles, with each mark representing
0.05 miles of course deviation. If you do get off course by
more than the selected scale, an arrow prompt will appear
at the end of the scale to indicate the direction you are off
course. When you are one minute away from the destination you will be alerted by a flashing on-screen
message box.
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Moving Map Page
Bearing to
Waypoint
Track Over
Ground
Distance to
Waypoint
Moving Map
Page
Present
Position
Speed Over
Ground
The GPSCOM 170 features a powerful real-time moving map that can do much more than just plot your
course and route. The map page also provides you with a
target cursor that will let you pan ahead to nearby waypoints, determine the distance and bearing to any map
position, and mark new waypoints while you navigate.
Range Rings
The GPSCOM 170 also features dedicated zoom keys
for instant zooming. The map portion of the page displays your present position as a diamond icon, with your
track and/or route displayed as small points. Nearby waypoints are represented as squares, with the waypoint
name listed. You may select which features are shown
through the map setup submenu page (see pages 54).
The GPSCOM 170 has onscreen range rings to help
you estimate distances relative to your present position. The value of each ring
is determined by the current
zoom scale, and is equal to
1/5 of the selected scale.
The four corners of the map page are used to display
various navigation data, including the bearing and distance to a destination waypoint and your current track
and speed over the ground. The two fields at the top corners of the map show your bearing and distance to one of
three selectable destinations: an active destination waypoint; a highlighted on-screen waypoint; or the panning
target crosshair. If you are not navigating to a waypoint or
using the panning function, the top data fields will not be
displayed. Your current track and speed are shown at the
bottom corners of the display.
To turn the range rings display on or off (the default
setting is off), see the map
setup section instructions
on page 54.
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Moving Map
Page
Zooming and Panning
There are three main functions you can perform from
the map page— zooming, panning, and pointing. The
moving map has 12 map scales (from 0.2 to 320 miles, or
0.5 to 600 km.) which are selected using the IN and OUT
zoom keys. These ranges are measured vertically.
To use the zoom keys:
1. From the map page, press either the IN or OUT
zoom keys.
2. To see the current map scale, press and hold either
button down. A pop-up window will display the
current scale.
The second function on the map page is the pan function, which allows you to move the map with the keypad
in order to view areas outside the current map.
To activate the pan function:
1. Use the keypad to move the map in any direction,
including diagonally.
Selecting Map Scales
To change the map scale,
press the zoom field UP and
DOWN keys.
As you begin to move the map, a crosshair will appear.
This crosshair will now serve as a target marker for the moving map. The distance and bearing to a destination will now
be replaced by the distance and bearing from your present
position to the target crosshair.
As you pan around the map, you’ll notice that the target crosshair will ‘snap’ to on-screen waypoints and highlight the waypoint name. Once a waypoint name is highlighted, you can review its waypoint definition page or
execute a GOTO function right from the map page.
To review the definition page for a waypoint highlighted on the map page:
1. Press E.
To GOTO a waypoint highlighted on the map page:
Panning Function
During panning mode, an
on-screen crosshair will
appear. Your present position will remain as a diamond icon, with the range
and bearing to the crosshair
displayed in the top corners
of the map.
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1. Press G.
2. Press E to confirm the GOTO waypoint page.
To stop the panning function:
1. Press Q.
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Using the Cursor to Mark and GOTO Waypoints
Moving Map
Page
During panning, the crosshair represents a target
position right on the moving map, with the range and
bearing to the target displayed at the top corners of the
screen. You can also use the target crosshair to mark a
new waypoint position or as a GOTO destination right
from the map field.
To mark the target crosshair position as a new
waypoint:
1. Press M to capture the position.
Marking a Waypoint
To mark a new waypoint
with the crosshair, simply
pan to the desired position
and press the MARK key.
2. Enter a new name and route number if you wish.
3. Press E to save the waypoint and return to the
map page.
You can also use the target crosshair as an instant
GOTO destination. Similar to the MOB mode, this function will mark and instantly set a course for a new waypoint called ‘MAP’.
To GOTO the target crosshair:
1. Press G to capture the position.
2. Press E to confirm the MAP GOTO.
If you want to save the MAP waypoint, be sure to
rename it, as it will be overwritten the next time a map
GOTO is executed.
MAP GOTO
The crosshair may also be
used to define a GOTO destination by panning to the
desired position and pressing the GOTO key. If you
want to save the MAP waypoint, be sure to rename it.
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Accessing the Map Setup and Track Setup Windows
Map Setup
Page
You can access two additional pages—the map setup
page and the track setup page—by pressing E. while
on the map page. The map setup and track setup window
will appear, ready for you to select one.
To select map setup or track setup:
1. Highlight either field, and press E.
Map Setup Page and Orientation
The map setup page lets you select map orientation
and specify what items are displayed. The map may be
oriented to ‘North Up,’ ‘Track Up’ (the direction of current travel), or ‘DTK Up’ (desired track up, or the direction of travel to stay on course). The default setting is
track up.
To change the map orientation:
1. Highlight the ‘ORIENTATION’ field, and press E.
Select the desired orientation, and press E.
Accessing the map setup
page from the moving map
page.
The rest of the map setup page lets you specify what
items are displayed or plotted on the map page by selecting
‘YES’ or ‘NO’ in the appropriate field.
• ’RINGS’—displays the three present position range
rings on the map.
• ’ROUTE’—plots the straight–leg lines between waypoints of an active route and displays all route waypoint
names.
• ’NEAREST’—shows the nine nearest waypoints to your
present position (not to the target cursor) on the map.
• ’NAMES’—displays the waypoint name for the nine
nearest waypoints.
• ’TRACK LOG’—displays the number of track points up to
a maximum of 950.
To turn a map item on or off:
Selecting ‘Track Up’ map
orientation.
1. Highlight ‘YES’ or ‘NO’ for the specific map item, and
press E.
Track Log Setup Page
The track setup page lets you manage the track log
data. From this page, you can select whether to record a
track log and define how it is recorded.
To turn the track log on or off:
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1. Highlight the ‘RECORD’ field, and press E. Select
‘YES’ or ‘NO’, and press E.
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Track Method
The stored track method determines how often positions are stored in the track log. The default setting is
automatic, which will store a track based on resolution.
This setting gives you the most efficient use of track
memory and provides the most accurate TracBack route.
Track Method
To change the method to record points based on a
specific time interval:
1. Highlight the ‘CRITERIA’ field, and press E.
2. Select ‘TIME INTERVAL’, and press E twice.
3. Enter a value in hours, minutes, and seconds, and
press E.
Track Log Display
The track log option sets the number of points the
unit will attempt to display on the map page. The default
setting of 250 points provides good resolution with minimal screen clutter. The maximum setting is 768 points.
Once you’ve reached the maximum number of track
points, the older points will be lost as new points are
added. Note that adjusting the track points displayed will
not affect whether the receiver records a track log or the
ability to create a TracBack route.
Managing and Clearing the Track Log
The default track method
setting is automatic, which
will store a track based on
resolution.
The rest of the track setup window displays the percentage of available memory currently used to store track log
data and function fields to clear the track log memory and
activate the TracBack feature.
To clear the track log:
1. Highlight ‘CLEAR LOG?’, and press E.
2. Highlight ‘Yes?’, and press E.
Clearing the track log.
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Menu Page
Menu Page
The GPSCOM 170 menu page provides access to submenu pages that are used to select and customize operation and navigation setup. The 11 submenus are divided
into categories by function. The waypoint and route management submenus are discussed in their own respective
sections. We’ll now address the rest of the submenus in
the order they appear on the menu page.
To select a submenu page from the menu page:
1. Highlight the submenu page you want to view and
press E to display the submenu page.
2. To return to the menu page, press Q.
Distance and Sun Calculations
Menu Page
To select a submenu, use the
UP and DOWN keys to
highlight a menu option and
press ENTER.
The distance and sun calculation page will give you
the distance and bearing between any two waypoints and
will calculate the sunrise and sunset (in local time) at a
destination waypoint for a particular date.
To perform a distance and sun calculation:
1. Highlight the ‘from’ field and enter the desired waypoint. Press E to move to the next field.
2. Highlight the ‘to’ field and enter the destination waypoint. Press E to calculate the range and bearing
to the destination waypoint.
3. Highlight the ‘date’ field and enter the date for your
destination. Press E to display the sun
information.
Message Page
Dis/Sun Calculation
The unit will calculate the
sunrise and sunset times of
any stored waypoint or your
present position. To calculate, enter the date and year
and press ENTER.
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The message page displays all current messages in the
GPSCOM 170. There are two types of messages: temporary alerts (eg., approaching a waypoint) and condition
alerts (eg., battery power is low). All messages are initially indicated by a flashing on-screen box. After a temporary alert has been viewed, it is cleared. Condition alerts
are displayed on the message page until the condition is
resolved. See Appendix E for a complete list of messages.
To view the message page:
1. Highlight the ‘MESSAGES’ field and press E.
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System Setup
The first setup page is the system setup page, which
is used to select the operating mode, time offset and
screen preferences. The GPSCOM 170 has three operating modes:
System Setup
• GPS Off? disables all of the unit’s GPS functions
which will conserve battery power.
• GPS On enables all of the unit’s GPS functions,
making it a fully operational unit.
• Simulator? allows you to operate the unit without
acquiring satellites, and is ideal for practicing or
entering waypoints and routes while at home.
To select an operating mode:
1. Highlight the ‘MODE’ field and press E.
2. Use the arrow keypad to select a mode and press
E.
Date and Time Setup
The date and time field is located directly below the
mode field. Because the time shown is UTC time, you will
need to enter a time offset to display the correct local time
for your area. To determine the time offset for your area,
note your position and refer to the chart in Appendix G.
System Setup Page
Select simulator mode to
practice navigating at home.
To enter the time offset:
1. Highlight the ‘OFFSET’ field and press E.
2. Enter the time offset and press E. Remember to
select a positive or negative indicator for your offset.
Time Offset
To display the correct local
time, you must enter the
appropriate offset from the
chart at the end of
Appendix G.
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Time Format
System Setup
The time display shown on the system setup and
position pages may be set to display the time in a 12- or
24-hour format.
To select the time format:
1. Highlight the ‘HOURS’ field and press E. Select
12- or 24-hour display, and press E to confirm.
Screen Contrast
The GPSCOM 170 features adjustable screen contrast
and is controlled by using an on-screen bar scale. The
screen contrast can also be adjusted from the satellite status page (see page 20).
To set the screen contrast:
12/24 Hour Clock
To display the time in
AM/PM format, select the
12 hour option from the
‘hours’ field.
1. Move the field highlight to the ‘CONTRAST’ field and
press E. Use left and right arrow keys to adjust
the bar scale for the desired contrast and press
E.
Screen Backlighting
The screen backlight timer is adjustable for 0, 15, 30,
60, 120 and 240 seconds. The ‘0’ setting will keep backlighting on continuously. Whenever backlighting is on, a
bulb icon will appear on the status page.
To set the backlight timer:
1. Highlight the ‘LIGHT’ field and press E.
2. Use the up and down arrow keys to toggle through and
select the desired setting, and press E.
3. To turn lighting on and off, press the backlight button.
Screen Backlighting
To get the longest battery
life, keep the screen backlighting at the default
15 -second option.
Tone Setting
You may choose from three settings for audible tone:
messages only, messages and keystrokes, or no tone at all.
Tone volume is controlled by the volume knob.
To specify a tone setting:
58
1. Highlight the ‘TONE’ field and press E. Use the up
and down arrow keys to select the desired tone and
press E.
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Navigation Setup
The navigation setup page is used to select units of
measurement for position formats, map datums, CDI
scale, as well as distance, speed and heading information.
Navigation
Setup
Position Formats
The default position setting for the GPSCOM 170 is
latitude and longitude in degrees and minutes
(hdddºmm.mmm’). You may also select degrees, minutes
and seconds (hdddºmm’ss.s’’); degrees only
(hddd.dddddº); UTM/UPS coordinates; or British,
German, Irish, Maidenhead, Swedish, Swiss or Taiwan
grid formats.
To select a position format:
1. Highlight ‘POSITION FRMT’ and press E. Use the
up and down arrow keys to select the desired setting.
Confirm the setting by pressing E.
Map Datums
The map datum field is located just below the position format field, and comes with a WGS 84 default setting. Although 104 total map datums are available for use
(see the map datum listing in Appendix F), you should
only change the datum if you are using maps or charts
that specify a different datum than WGS 84.
NAV Setup Page
The position format may be
set to display your position
in various lat/lon or grid
formats.
To select a map datum:
1. Highlight the ‘MAP DATUM’ field and press E.
2. Use the up and down arrow keys to toggle through and
select the desired setting. Confirm the setting by
pressing E.
CDI Scale Setup
The course deviation indicator (CDI) scale definition
field lets you select the +/- range of the CDI bar scale.
Three scales are available: +/- 0.25, 1.25 and 5.0 miles or
kilometers, with 0.25 being the default setting.
To enter a CDI scale setting:
1. Highlight the ‘CDI SCALE’ field and press E. Use
the up and down arrow keys to select the desired setting. Press E to confirm the selection.
Map Datum
The GPSCOM 170’s default
map datum is WGS 84.
WARNING: Using the
wrong map datum can seriously affect the accuracy of
your GPS receiver.
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Units of Measure
Menu Page
Options
The GPSCOM 170 lets you select nautical (default),
statute or metric units of measure for all speed and distance fields.
To change the unit of measure:
1. Highlight the ‘units’ field and press E.
2. Use the up and down arrow keys to select the desired
unit of measure. Press E to confirm the selection.
Magnetic Heading Reference
The GPSCOM 170’s heading information can be displayed referencing magnetic north (auto or user-defined),
true north or calculated grid headings. The default setting
is automatic magnetic north, which is suitable for most
applications.
To select a heading reference:
Magnetic Heading
To enter a user-defined
magnetic variation, select
the ‘User Mag’ option and
enter the desired direction
and value.
1. Highlight the ‘HEADING’ field and press E. Select
the desired heading preference.
2. Press E to confirm the selection.
To enter a user-defined magnetic heading:
1. Select the ‘USER MAG’ option and press E.
2. Use the up and down arrow keys to enter the degrees
and direction of magnetic variation.
3. Press E to confirm the magnetic variation value.
Map Setup and Orientation
The map setup page can be accessed from the main
menu page and the moving map page. See page 54 for
details on the map setup and orientation.
Map Setup Page
The map orientation can be
set to track up, north up, or
desired track up. The plotted items options let you
define what appears on the
map display.
60
TracBack Function
The next listing on the main menu page is the track
log, which can be also be accessed from the moving map
page. See page 40 for details on the tracback function.
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Interface Setup
The interface setup page lets you specify the formats
for connecting external NMEA devices, a DGPS receiver,
or a personal computer. There are six options:
Interface Setup
• ‘GRMN/GRMN’ is the proprietary interface that
allows you to exchange data such as waypoints,
routes, and track logs between GARMIN units and a
GARMIN PC software kit.
• ‘NONE/NMEA?’ provides navigation information to
a compatible NMEA device such as an autopilot or
radar. NMEA 0180, 0182, 0183 v. 1.5 and 0183 v.
2.0 output options are available.
• ‘NMEA/NMEA?’ allows input from a NMEA compatible device, with selectable NMEA output.
• ‘RTCM/NMEA?’ allows DGPS beacon receiver input
and also provides selectable NMEA output.
• ‘RTCM/NONE?’ allows DGPS beacon receiver input
without output capabilities.
• ‘NONE/NONE?’ provides no interfacing capabilities.
To select an I/O format:
1. Highlight the I/O field and press E. Use the up and
down arrow keys to toggle through and select the desired
setting, and press E.
Interface Setup Page
The default interface setting
is the GARMIN/GARMIN
option, which can be used
for unit-to-unit data transfer or interfacing with a
GARMIN PC Kit.
To select a transfer option:
1. Highlight the ‘HOST’ field and press E. Use the up
and down arrow keys to select a setting and press E.
To disable all interfacing capabilities, select
‘NONE/NONE’. If you want to output NMEA data to
compatible external devices without any differential
input capability, select ‘NONE/NMEA’. Once a NMEA
output setting has been selected (with or without RTCM
input), the NMEA field will become highlighted. NMEA
formats 0180, 0182 or 0183 (1.5 or 2.0) are available.
To select a NMEA format:
1. Press E to begin a NMEA selection. Use the up and
down arrow keys to select a format, and press E.
NMEA Interface
Once a NMEA format is
selected, the baud rate will
automatically be set to the
proper speed.
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DGPS Interface
DGPS Interface
The last two format settings allow the unit to accept
RTCM DGPS corrections in RTCM 104 version 2.0 format. Using DGPS corrections will improve receiver accuracy to 5-10 meters, regardless of errors induced by the
government’s Selective Availability (SA) program. The
RTCM/NONE format will allow connection to any manually-tuned beacon receiver by using the proper output
interface. The baud rate is selectable from the unit.
The RTCM/NMEA selection controls the GARMIN
GBR-21 differential beacon receiver. Once a RTCM setting has been selected, the unit will either automatically
try to tune the last frequency and bit rate you selected or
will switch to the default frequency of 304.0 kHz with a
bit rate of 100 bps if no previous beacon has been tuned.
You may also enter your own frequency and bit rate.
To enter a DGPS beacon frequency:
1. Highlight the ‘FREQ’ field , and press E.
2. Enter the desired frequency, and press E.
DGPS Interface
Once a RTCM option is
selected, you must manually
tune the beacon receiver
from the frequency field.
3. Highlight the ‘RATE’ field , and press E.
4. Select the desired transmission rate, and press E.
When the GPSCOM 170 is receiving DGPS corrections from the GBR-21, the ‘beacon receiver’ section of
the I/O setup page will display the beacon frequency and
signal strength, as well as the distance from the transmitter to the beacon receiver. At the bottom of the beacon
receiver field, a status message will keep you informed of
DGPS activity:
• A ‘tuning’ message will be displayed while a beacon
signal is being tuned.
• Once the beacon signal has been tuned, a ‘receiving’
message will be displayed.
The message page will alert
you to any problems relating to DGPS operation. You
may also monitor the DGPS
status from the status field
on the interface setup page.
62
• If a beacon signal is tuned and no corrections are
being received, a ‘no data’ message will be displayed.
• If a beacon signal cannot be tuned, a ‘no status’
message will be displayed.
The unit will also display one of three alert messages
concerning DGPS operation through the message page:
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DGPS Interface (con’t.)
• No DGPS Position—not enough data is available
to compute a DGPS position.
• No RTCM Input—the beacon receiver is not properly connected or the baud rates do not match.
Simulator
Mode
• RTCM Input Failed—DGPS data was being
received but has been lost.
Navigation Simulator
The simulator mode lets you practice all aspects of its
operation without active satellite acquisition. You can
also plan and practice trips, enter new waypoints and
routes, and save them for use during normal operation.
The unit does not track satellites in simulator mode.
Although you can create and save waypoints and routes
while using the simulator mode, never attempt to use the
simulator mode for actual navigation. The simulator is
activated from the system setup page, with speed and
heading controlled from the position, compass or highway pages.
To activate the simulator:
1. Highlight ‘SYSTEM SETUP’ and press E.
2. Highlight the ‘MODE’ field and press E.
Select the simulator mode
from the operation mode
options and press ENTER.
You may return to normal
operation by changing the
operation mode or turning
the unit off.
3. Use the up or down arrow keys to select ‘SIMULATOR?’.
Press E to confirm.
4. Press E to return to the menu page.
Once the simulator mode has been activated, use the
position, compass or highway page to set your speed and
track. You may also enter a new position if you desire
(only from the position page).
To enter track, speed, and position:
1. Highlight the ‘TRACK’ field and press E. Enter a track
heading and press E.
2. Highlight the ‘SPEED’ field and press E.
3. Enter a speed and press E. Highlight the ‘POSITION’
field (position page only) and press E.
4. Enter a position and press E.
Speed, Track & Position
Once simulator mode is
selected, speed and track
values may be entered on
the position or navigation
pages. A simulated position
may also be entered on the
position page.
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APPENDIX A
Initializing the GPSCOM 170 for First-Time Use
Initializing The
Receiver
The first time you power up your new GPSCOM 170
is an important step in getting the best possible GPS performance. The receiver must be given an opportunity to
collect satellite almanac data and establish its present
position. This initialization process takes approximately
3 to 5 minutes and is only necessary for first-time operation, after memory loss, or when the receiver has been
moved more than 500 miles from the last calculated position with the power off. Once your GPSCOM 170 has
been properly initialized, you should acquire satellites
and obtain a position quickly each time you power up.
Your GPSCOM 170 is shipped in the AutoLocate
mode, which is designed to let the receiver “find itself”
without using its last known position (you don’t need to
worry about what lat/lon is currently displayed on the
position page, as the unit is not using that information to
calculate your present position).
Welcome Page
To power up your unit for first time use:
1. Position the internal GPS antenna so it has the best possible view of the sky (the internal patch antenna is located just above the keypad, marked by the embossed
globe).
2. Turn the unit on by rotating the volume control
clockwise.
3. Rotate the squelch control clockwise until receiver
noise disappears.
4. Remain in the same location until the GPSCOM 170 has
calculated a position. (You’ll know you have a fix when a
2D or 3D status appears in the status field or the receiver automatically transitions to the position page. If you
encounter difficulty acquiring satellite signals, see
page 66.)
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APPENDIX A
EZinit
After a few seconds, the satellite status page will
appear with the EZinit prompt ready for you to select one
of two initialization methods:
Initializing The
Receiver
• Select Country— allows you to initialize the receiver by selecting your present position from a list of
countries in the GPSCOM 190’s internal database.
This feature provides a position fix in 3-5 minutes.
• AutoLocate— allows the GPSCOM 190 to initialize
itself and calculate a position fix without knowing
your present position. This feature provides a position fix in approximately 5 minutes.
If the EZinit prompt has not automatically appeared
on the status page, press E.
If you’ve already initialized the GPSCOM 170 and the
EZinit prompt appears, highlight the ‘NO RE-INIT’ selection with the arrow keypad and press E. The EZinit
prompt may appear if you’ve had the unit on in normal
mode while indoors, or if the antenna is shaded while
acquiring satellites.
To initialize the receiver:
1. Use the up or down arrow keys to highlight the
‘COUNTRY’ option and press E.
The EZinit prompt will
automatically appear if the
receiver needs to be initialized. The prompt may also
appear during normal use if
the antenna is shaded or the
unit is indoors.
2. Use the down key to scroll through the country listings
until the country where you are presently located
appears.
3. Use the up or down arrow key to highlight the
country/state/region you’re in. If the country you’re in is
not listed, select another country within 500 miles of
your present position.
4. Press E to finish.
Use the arrow keypad to
highlight the country and
region or state (if necessary) of your present position from the list and press
ENTER. If the country is
not listed, select the closest
country instead.
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Initializing The
Receiver
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Page 66
Acquiring Satellites
The GPSCOM 170 will now begin searching for the
appropriate satellites for your position and should
acquire a fix within three to five minutes. You can verify
getting a position fix by watching the status page transition to the position page (provided you haven’t pressed
any other keys) or by looking for a ‘2D NAV’ or ‘3D NAV’
status at the top-left corner of the status page.
Troubleshooting
If you have trouble initializing the receiver or getting
a position fix, check the following:
• Does the antenna have a clear view of the sky?
If there are large buildings such as hangers, metal surfaces, or other obstructions, the unit may not be
receiving enough satellite signals to calculate a fix.
• Is the right country/state selected from the EZinit
list?
Once satellites have been
found, hollow signal
strength bars will be displayed while the data is
being collected. The signal
strength bars can be used to
help determine if satellites
are being shaded.
66
Check for the correct approximate lat/lon on the
position page or reselect the appropriate country
from the list to restart the initialization.
• Have you moved more than 500 miles from the
last calculated position with the receiver off?
Reinitialize the receiver, selecting the country/state of
your new location from the EZinit list.
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Page 67
APPENDIX B
Flex Com Antenna Attachment and Removal
To remove the flex com antenna:
Accessories &
Installation
1. Squeeze the base of the antenna and turn counterclockwise until the antenna disengages from the connector on the unit.
2. Pull up gently and remove.
To attach the flex com antenna:
1. Place the antenna fully over the BNC connector,
squeeze the base of the antenna, and turn clockwise
until the antenna engages the connector.
Carrying Case
A durable nylon carrying case comes with a belt
attachment on the back. A side pocket is included for
easy storage of the com antenna.
Belt Clip
The GPSCOM 170 includes a sturdy belt clip so you
can carry the unit with you wherever you go. To attach
the clip, you will need to remove the rubber bumper from
the back of the unit. Attach the clip using the two screws
just removed from the bumper as shown in the figure
below.
Belt Clip
Flex com antenna attachment.
Rubber
Bumper
To attach the wrist strap,
thread the strap through the
slot in the rubber bumper or
the belt clip. Next, take the
solid end of the strap, insert
it through the eye of at the
other end, and tighten.
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Page 68
APPENDIX B
Battery Pack Removal
To remove the Ni-Cad battery pack:
Accessories &
Installation
1. Press down on the battery pack latch, pull down on the
pack and remove.
Battery Pack
Latch
Battery Pack
Removal
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Page 69
APPENDIX B
Trickle Charger/AC Adapter
The trickle charger/AC adapter supplied with the
GPSCOM 170 converts line voltage to the DC voltage
necessary to operate the unit. The AC adapter also slowly recharges the Ni-Cad battery pack at a rate of 14 hours
for a full recharge. Make sure you charge the
Ni-Cad battery pack for 14 hours before using your
GPSCOM 170 to ensure optimum capacity and performance. When charging the battery pack, be sure to turn
the unit off to ensure a full charge. The cigarette lighter
adapter will also trickle charge the battery pack only if the
unit is turned on and in the receive mode (GPS or com).
To recharge the Ni-Cad battery pack:
1. Attach the connector end of the adapter to the
GPSCOM 170 by sliding it into the slot on the left side of
the unit (observe the keyway on the unit connector and
the matching groove on the connector end).
2. Plug the other end into an electrical outlet.
#
!
Do not charge the GPSCOM 170 for more than 24
hours. Heat generated by overcharging can shorten
battery life and cause battery pack component failures.
Battery Pack Handling and Storage
Accessories &
Installation
WARNING!
Do not dispose of a Ni-Cad
battery pack in a fire or
incinerator. Heat may cause
battery cells to explode
and/or release dangerous
gases. All batteries must be
recycled or disposed of
properly, and cannot be disposed of by ordinary waste
disposal methods. Please
take the time to check with
your nearest GARMIN service center for proper disposal
methods
and
locations.
The Ni-Cad battery supplied with the GPSCOM 170
has exposed terminals which may be shorted if not stored
properly. Don’t place a loose battery pack on or near
metal objects (paper clips, keys, tools, etc.) and be careful when placing battery packs in handbags, toolboxes,
etc. Never immerse a battery pack in water. If the battery
pack becomes wet, wipe it dry before attaching it to
the unit.
Always store your GPSCOM 170 with the battery
pack installed. An internal lithium battery will save
almanac and waypoint data for an extended period of
time, but it is designed to allow you to recharge the battery pack, not replace it. If you’re storing the unit for the
season, make sure the batteries are fully charged.
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Page 70
APPENDIX C
The GPSCOM 170 operates on the following VHF channels.
Channel List
Channel Number
USA
INT
CAN
Transmit
Receive
01
01
02
03
02
03
156.050
156.050
156.100
156.150
156.150
156.200
156.200
156.250
156.250
156.300
156.350
156.350
156.400
156.450
156.500
156.550
156.600
156.650
156.700
156.750
156.800
156.850
156.900
156.900
156.950
156.950
157.000
157.050
157.050
157.100
157.100
157.150
157.150
157.200
157.250
157.300
156.350
157.400
156.025
156.075
156.075
156.125
160.650
156.050
160.700
160.750
156.150
160.800
156.200
160.850
156.250
156.300
160.950
156.350
156.400
156.450
156.500
156.550
156.600
156.650
156.700
156.750
156.800
156.850
161.500
156.900
161.550
156.950
161.600
161.650
157.050
161.700
157.100
161.750
157.150
161.800
161.850
161.900
161.950
162.000
160.625
160.675
156.075
160.725
01A
Important!
• Channel 13: 1 W
initial USA.
• Channel 15: No transmit USA or INT; 1W
Canada.
• Channel 17: 1W all
bands.
• Channel 20: 1W
Canada.
• Channels 03A and
61A are not
authorized for use by
the general public in
U. S. waters.
03A
04
04A
05
05A
06
07A
08
09
10
11
12
13
14
15
16
17
06
07
08
09
10
11
12
13
14
15
16
17
18
05A
06
07A
08
09
10
11
12
13
14
15
16
17
18A
18A
19
19A
20
20
21
19A
20
21A
21A
22
22A
23
23A
24
25
26
27
28
24
25
26
27
28
60
61
61A
62
70
Frequency (MHz)
22A
23
24
25
26
27
28
60
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Page 71
APPENDIX C
Channel Number
USA
INT
CAN
Transmit
Receive
62A
156.125
156.175
156.175
156.225
156.225
156.275
156.275
156.325
156.325
156.375
156.425
156.475
NO TX
156.575
156.625
156.675
156.725
156.875
156.925
156.925
156.975
156.975
157.025
157.025
157.075
157.075
157.125
157.125
157.175
157.175
157.225
157.275
157.325
157.375
157.425
157.425
156.125
160.775
156.175
160.825
156.225
160.875
156.275
160.925
156.325
156.375
156.425
156.475
156.525
156.575
156.625
156.675
156.725
156.875
161.525
156.925
161.575
156.975
161.625
157.025
161.675
157.075
161.725
157.125
161.775
157.175
161.825
161.875
161.925
161.975
162.025
157.425
63
63A
64
64A
64
64A
65
65A
65A
66
66A
67
68
69
70
71
72
73
74
77
67
68
69
70
71
72
73
74
77
78
66A
67
68
69
70
71
72
73
74
77
78A
78A
79
79A
79A
80
80A
80A
81
81A
81A
82
82A
83
83A
84
85
86
87
88
88A
84
85
86
87
88
Frequency (MHz)
82A
83
83A
84
85
86
87
88
Channel List
Important!
• Channel 66A: 1W
Canada.
• Channel 77: 1W
initial Canada and
USA.
• Channels 64A, 81A,
and 83A are not
authorized for use by
the general public in
U.S. waters.
WX Channels - Receive Only
WX1
WX2
WX3
WX4
WX5
162.550
162.400
162.475
162.425
162.450
WX6 162.500
WX7 162.525
WX8 161.650
WX9 161.850
WX10 162.000
71
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Page 72
APPENDIX D
The GPSCOM 170 is constructed of high-quality materials and
should not require user maintenance. Should your unit ever need
repair, please take it to an authorized GARMIN service center. The
GPSCOM 170 has no user-serviceable parts. Never attempt any
repairs yourself. To protect your GPSCOM 170, keep it in its carrying case when not in use, and never allow gasoline or other solvents
to come into contact with the case. Clean the case and lens with a
soft cloth and a household window cleaner.
Specifications
PHYSICAL
Size:
7.1”H x 2.3”W x 1.4”D (18 x 5.8 x 3.6 cm)
Weight:
Approx 1.4 lbs. (.63Kg)
Temperature Range:
5º to 158ºF (-15º to 70ºC)
Receiver:
PhaseTrac12
PERFORMANCE
GPS:
Acquisition Time:
Approx. 15 seconds (warm start)
Approx. 45 seconds (cold start)
Approx. 5 minutes (AutoLocate)
Update Rate:
Position Accuracy:
1/second, continuous
1-5 meters (16-33 ft.) with DGPS corrections*
15 meters (49 ft.) RMS**
Transceiver:
Velocity Accuracy:
0.1 knot RMS steady state, 99 knots max
Dynamics:
Performs to specification to 6g’s
Frequency Bands:
All U.S., Canadian, and International marine channels, plus 10 weather frequencies
Selectivity:
Adjacent channel selectivity, 65dB
Spurious Image Response, 65dB
Sensitivity (FM):
> 12 dB SINAD at .3 microvolt
(WX):
> 12 dB SINAD at .3 microvolt
Specifications subject to change without notice.
* With optional GARMIN GBR 21 Beacon Receiver Input.
** Subject to accuracy degradation to 100m 2DRMS under the US DOD-imposed Selective Availability Program.
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Page 73
APPENDIX D
Specifications
Transceiver Specifications (continued):
Channel Spacing:
25 kHz
Audio Power:
0.5 W into 16 ohm speaker
Audio Distortion:
< 10%
Transmitter Output:
1 watt low/5 watts high
Sidetone Audio Power:
7 vPP across 330 ohm load
Frequency Stability:
+/- 10 PPM
Duty Cycle:
No damage even if continuously keyed
Microphone:
Internal electret or optional external mic/headset
Compliance:
FCC Part 87
POWER
Source:
(1) 7.2v, 1800 mAh Ni-Cad battery pack, or
9-33 VDC external.
Battery Life:***
6 hours (low) and 4 hours (high); GPS/COM (GPS
only 10 hours).
Current Consumption:
Standby - 150 mA, GPS on, Com Off.
Receive - 240 mA; GPS on, Com Rx.
Transmit - 2.4 A (High Power), 1.3 A (Low Power)
***Based on ratio of 5% transmit, 5% receive, and 90% standby
73
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Page 74
APPENDIX E
Messages
The GPSCOM 170 uses a flashing on-screen message
indicator to alert you to important information. Whenever the
message indicator appears, press P to view the message
page. There are two types of messages: temporary alerts and
condition alerts. Temporary alerts are cleared from the message
page after viewing, while condition alerts remain until the condition has been resolved. Pay careful attention to all messages
for your own safety.
Accuracy has been Degraded—The accuracy of the receiver has been degraded beyond
500 meters due to poor satellite geometry or
data quality. You should check other navigational sources to verify the position indicated.
Oscillator Needs Adjustment—The unit has
detected excessive drift in its internal crystal
oscillator which may result in longer acquisition time. Take the unit to an authorized service center.
Active Waypoint Can’t Be Deleted—You
have attempted to change the ‘Active To’ or
‘Active From’ waypoint. Clear the active route
or GOTO before making your changes.
Poor GPS Coverage—The unit cannot
acquire the necessary number of satellites to
compute a position. Try another location with
a clearer view of the sky.
Already Exists—The name you are entering
already exists in memory.
Power Down and Re-init—The unit is not
able to calculate a position due to abnormal
satellite conditions. Turn the unit off and verify the last position shown by other means. Try
the unit again later, possibly in a different location.
Battery Power is Low—The Ni-Cad battery
is low and should be recharged.
Battery Power is too Low to Transmit—
Battery power is too low to allow transmitting.
COM Failed—The VHF com has failed. Take
the unit to an authorized service center.
GPS and COM Turned Off—The GPS and
Com functions are turned off due to low battery voltage.
Leg Not Smoothed—The upcoming route leg
is too short for smooth waypoint transitions.
Need 2D Altitude—The unit needs altitude
input in order to start and/or continue 2D navigation.
74
Read Only Mem has Failed—The permanent memory has failed and the unit is not
operable. Take the unit to an authorized service center.
Received an Invalid WPT—A waypoint was
received during upload transfer that has an
invalid identifier.
Route Waypoint Can’t be Deleted—The
waypoint you are trying to delete is part of a
route. Delete the waypoint from the route
before removing it from memory.
No DGPS Position—Not enough data is
available to compute a DGPS position.
Receiver has Failed—A failure in receiver
hardware has been detected. If this message
persists, take the unit to an authorized dealer.
No RTCM Input—The beacon receiver is
improperly connected or baud rates do not
match.
Route is Full—You have attempted to add
more than 30 waypoints to a route.
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Page 75
APPENDIX E
Messages
Route is not Empty—You have attempted to copy
into a route already in use.
RTCM Input has Failed—DGPS data being
received has been lost. You are no longer receiving
the beacon signal.
Searching the Sky—The unit is searching the sky
for almanac data or the unit is in AutoLocate mode.
Stuck PTT—The unit is continuously transmitting due to a stuck microphone condition.
Transfer has been Completed—The receiver is
finished uploading or downloading information to
the connected device.
Weather Alert Tone Detected—The unit has
detected the NOAA severe weather tone.
WPT Memory is Full—You have used all 250
waypoints. Delete unwanted waypoints to make
room for new entries.
Stored Data was Lost—All waypoints, routes,
time and almanac data has been lost due to battery
failure or clearing the receiver’s memory.
75
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Page 76
APPENDIX F
Map Datums
Adindan
Afgooye
AIN EL ABD ‘70
Anna 1 Ast ‘65
ARC 1950
ARC 1960
Ascnsn Isld ‘58
Astro B4 Sorol
Astro Bcn “E”
Astro Dos 71/4
Astr Stn ‘52
Astrln Geod ‘66
Astrln Geod ‘84
Bellevue (IGN)
Bermuda 1957
Bogata Observ
Campo Inchspe
Canton Ast ‘66
Cape
Cape Canavrl
Carthage
CH-1903
Chatham 1971
Chua Astro
Corrego Alegr
Djakarta
Dos 1968
Easter Isld 67
76
The following list shows the map datums available for
the GPSCOM 170. Menu page abbreviations are listed
first, followed by the corresponding map datum name
and area. The default map datum for the GPSCOM 170 is
WGS 84.
Adindan- Ethiopia, Mali, Senegal,
Sudan
Afgooye- Somalia
AIN EL ANBD 1970- Bahrain Island,
Saudi Arabia
Anna 1 Astro ‘65- Cocos Isl.
ARC 1950- Botswana, Lesotho,
Malawi, Swaziland, Zaire, Zambia,
Zimbabwe
ARC 1960- Kenya, Tanzania
Ascension Island ‘58- Ascension
Island
Astro B4 Sorol Atoll- Tern Island
Astro Beacon “E”- Iwo Jima
Astro Dos 71/4- St. Helena
Astronomic Stn ‘52- Marcus Island
Australian Geod ‘66- Australia,
Tasmania Island
Australian Geod ‘84- Australia,
Tasmania Island
Efate and Erromango Islands
Bermuda 1957- Bermuda Islands
Bogata Obsrvatry- Colombia
Campo Inchauspe- Argentina
Canton Astro 1966- Phoenix Islands
Cape- South Africa
Cape Canaveral- Florida, Bahama
Islands
Carthage- Tunisia
CH 1903- Switzerland
Chatham 1971- Chatham Island
(New Zealand)
Chua Astro- Paraguay
Corrego Alegre- Brazil
Djakarta (Batavia)- Sumatra Island
(Indonesia)
Dos 1968- Gizo Island
(New Georgia Islands)
Easter Island 1967
European 1950
European 1979
Finland Hayfrd
Gandajika Base
Geod Datm ‘49
Guam 1963
Gux 1 Astro
Hjorsey 1955
Hong Kong ‘63
Hu-Tzu-Shan
Indian Bngldsh
Indian Thailand
Indonesia ‘74
Ireland 1965
ISTS 073 Astro
Johnston Island
Kerguelen Islnd
Kertau 1948
L. C. 5 Astro
Liberia 1964
Luzon Mindanao
Luzon Philippine
Mahe 1971
Marco Astro
Massawa
Merchich
Midway Ast ‘61
Minna
European 1950- Austria, Belgium,
Denmark, Finland, France, Germany,
Gibraltar, Greece, Italy, Luxembourg,
Netherlands, Norway, Portugal,
Spain, Sweden, Switzerland
European 1979- Austria, Finland,
Netherlands, Norway, Spain, Sweden,
Switzerland
Finland Hayford- Finland
Gandajika Base- Republic of Maldives
Geodetic Datum ‘49New Zealand
Guam 1963- Guam Island
Gux 1 Astro- Guadalcanal Island
Hjorsey 1955- Iceland
Hong Kong ‘63- Hong Kong
Hu-Tzu-Shan- Taiwan
Indian- Bangladesh, India, Nepal
Indian- Thailand, Vietnam
Indonesia 1974- Indonesia
Ireland 1965- Ireland
ISTS 073 ASTRO ‘69Diego Garcia
Johnston Island Kandawala
Kandawala- Sri Lanka
Kerguelen Island
Kertau 1948- West Malaysia,
Singapore
Cayman Brac Island
Liberia 1964- Liberia
Luzon- Mindanao Island
Luzon- Philippines
(excluding Mindanao Island)
Mahe 1971- Mahe Island
Marco Astro- Salvage Island
Massawa- Eritrea (Ethiopia)
Merchich- Morocco
Midway Astro ‘61- Midway
Minna- Nigeria
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Page 77
APPENDIX F
Map Datums
NAD27 Alaska
NAD27 Bahamas
North American 1927- Alaska
North American 1927Bahamas (excluding San Salvador
Island)
NAD27 Canada
North American 1927- Canada and
Newfoundland
NAD27 Canal Zone North Am. 1927- Canal Zone
NAD27 Caribbn
North American 1927- Caribbean
(Barbados, Caicos Islands, Cuba,
Dom. Rep., Grand Cayman, Jamaica,
Leeward and Turks Islands)
NAD27 Central
North American 1927- Central
America (Belize, Costa Rica, El
Salvador, Guatemala, Honduras,
Nicaragua)
NAD27 CONUS
North Am. 1927- Mean Value
NAD27 Cuba
North American 1927- Cuba
NAD27 Grnland
North American 1927Greenland (Hayes Peninsula)
NAD27 Mexico
N. American 1927- Mexico
NAD27 San Sal
North American 1927- San Salvador
Island
NAD83
North American 1983- Alaska,
Canada, Central America, CONUS,
Mexico
Nhrwn Masirah
Nahrwn- Masirah Island (Oman)
Nhrwn Saudi A
Nahrwn- Saudi Arabia
Nhrwn United A
Nahrwn- United Arab Emirates
Naparima BWI
Naparima BWI- Trinidad and
Tobago
Obsrvtorio ‘66
Observatorio 1966- Corvo
and Flores Islands (Azores)
Old Egyptian
Old Egyptian- Egypt
Old Hawaiian
Old Hawaiian- Mean Value
Oman
Oman- Oman
Ord Srvy GB
Old Survey Grt Britn- England, Isle
of Man, Scotland, Shetland Isl.,
Wales
Pico De Las Nv
Canary Islands
Ptcairn Ast ‘67
Pitcairn Astro ‘67- Pitcairn Isl.
Prov S Am ‘56
Prov S Chln ‘63
Puerto Rico
Qatar National
Qornoq
Reunion
Rome 1940
RT 90
Santo (Dos)
Sao Braz
Sapper Hill ‘43
Schwarzeck
Sth Amrcn ‘69
South Asia
SE Base
SW Base
Timbalai 1948
Tokyo
Tristan Ast ‘68
Viti Levu 1916
Wake-Eniwetok
WGS 72
WGS 84
Zanderij
Prov So Amricn ‘56- Bolivia,
Chile,Colombia, Ecuador, Guyana,
Peru, Venezuela
Prov So Chilean ‘63- S. Chile
Puerto Rico & Virgin Islands
Qatar National- Qatar
Qornoq- South Greenland
Reunion- Mascarene Island
Rome 1940- Sardinia Island
Sweden
Santo (Dos)- Espirito Santo Island
Sao Braz- Sao Miguel, Santa
Maria Islands (Azores)
Sapper Hill 1943- East Falkland
Island
Schwarzeck- Namibia
South American ‘69- Argentina,
Bolivia, Brazil, Chile, Colombia,
Ecuador, Guyana, Paraguay, Peru,
Venezuela, Trinidad and Tobago
South Asia- Singapore
Southeast Base- Porto Santo
and Madiera Islands
Southwest Base- Faial, Graciosa,
Pico, Sao Jorge and Terceira Islands
(Azores)
Timbalai 1948- Brunei and E.
Malaysia (Sarawak and Sabah)
Tokyo- Japan, Korea, Okinawa
Tristan Astro 1968- Tristan da
Cunha
Viti Levu 1916- Viti Levu/ Fiji
Islands
Wake-Eniwetok- Marshall Isl.
World Geodetic System 1972
World Geodetic System 1984
Zanderij- Surinam
77
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Page 78
APPENDIX G
Time Offset Chart
TIme Offset
Chart
78
Reference the table below to find the UTC-to-local
time offset for your longitudinal zone. If you are in a daylight savings time zone, add one hour to the offset. For
example, if you are at longitude W081.0º00.00’ and UTC
time is 16:00, local time is 11:00 standard time. The time
zone boundaries given below may be different depending
on your area. Consult your charts for more accurate
information concerning time zones.
Longitudinal Zone Offset
Longitudinal Zone Offset
W180.0º to W172.5º
-12
E007.5º to E022.5º
1
W172.5º to W157.5º
-11
E022.5º to E037.5º
2
W157.5º to W142.5º
-10
E037.5º to E052.5º
3
W142.5º to W127.5º
-9
E052.5º to E067.5º
4
W127.5º to W112.5º
-8
E067.5º to E082.5º
5
W112.5º to W097.5º
-7
E082.5º to E097.5º
6
W097.5º to W082.5º
-6
E097.5º to E112.5º
7
W082.5º to W067.5º
-5
E112.5º to E127.5º
8
W067.5º to W052.5º
-4
E127.5º to E142.5º
9
W052.5º to W037.5º
-3
E142.5º to E157.5º
10
W037.5º to W022.5º
-2
E157.5º to E172.5º
11
W022.5º to W007.5º
-1
E172.5º to E180.0º
12
W007.5º to E007.5º
0
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Page 79
APPENDIX H
A
Accessories . . . . . . . . . . . . . . . . . . . .67
Acquiring Satellites . . . . . . . . . . . .6, 66
Activating a Route . . . . . . . . . . . . . . .45
Active Route Page . . . . . . . . . . . . . . .46
Altitude Display . . . . . . . . . . . . . . . . .21
Antenna Height . . . . . . . . . . . . . . . . .33
Index
F
B
Battery Pack . . . . . . . . . . . . . . . .68, 69
Battery Voltage Indicator . . . . . . . . . .20
Belt Clip . . . . . . . . . . . . . . . . . . . . . .67
Active Route Page . . . . . . . . . . . . . . .46
Altitude Display . . . . . . . . . . . . . . . . .21
Antenna Height . . . . . . . . . . . . . . . . .33
C
CDI Scale Setup . . . . . . . . . . . . . . . . .59
Calling Channel . . . . . . . . . . . . . . . . .32
Carrying Case . . . . . . . . . . . . . . . . . .67
Cautions . . . . . . . . . . . . . . . . . . . . . . .iv
Channel Definition Page . . . . . . . . . .36
Channel List . . . . . . . . . . . . . . . . .70-71
Channel Lockout . . . . . . . . . . . . . . . .37
Com Setup Page . . . . . . . . . . . . . . . .29
Compass Page . . . . . . . . . . . . . . .12, 50
Copying and Clearing Routes . . . . . . .44
D
DGPS Interface . . . . . . . . . . . . . . . . .62
Data Entry . . . . . . . . . . . . . . . . . . . . . .8
Date and Time Setup . . . . . . . . . . . . .57
Deleting Waypoints . . . . . . . . . . . . . .24
Distance and Sun Calculations . . . . . .56
Dual Watch . . . . . . . . . . . . . . . . . . . .17
E
EZinit . . . . . . . . . . . . . . . . . . . . . . . .65
Editing Waypoints . . . . . . . . . . . . . . .27
Editing Routes . . . . . . . . . . . . . . . . . .46
Environment Canada . . . . . . . . . . . . .16
Estimated Time Enroute (ETE) . . . . . .11
FCC . . . . . . . . . . . . . . . . . . . . . . . . . .ii
Flex Antenna . . . . . . . . . . . . . . . . . . .67
G
GOTO . . . . . . . . . . . . . . . . . . . . . . .10
GPS Pages . . . . . . . . . . . . . . . . . . . . .13
H
Highway Page . . . . . . . . . . . . . . . . . .11
I
Initializing the Receiver . . . . . . . . . . .64
Interface Setup . . . . . . . . . . . . . . . . .61
K
Keys and Controls . . . . . . . . . . . . . . . .4
M
Map GOTO . . . . . . . . . . . . . . . . . . . .53
Magnetic Heading . . . . . . . . . . . . . . .60
MOB . . . . . . . . . . . . . . . . . . . . . . . . .39
Managing the Track Log . . . . . . . . . . .55
Map Datums . . . . . . . . . . . . . . . .55, 74
Map Page . . . . . . . . . . . . . . . . . . . . . .9
Map Setup Page . . . . . . . . . . . . . . . . .54
Maritime Radio User’s Guide . . . . . . .14
MOB . . . . . . . . . . . . . . . . . . . . . . . . .39
Map Page . . . . . . . . . . . . . . . . . . . . . .9
Marine Radio License . . . . . . . . . . . . . .2
Marking a Position . . . . . . . . . . . . . . .8
Marking a Waypoint . . . . . . . . . . . . .53
Memory Bank Page . . . . . . . . . . . . . .34
79
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APPENDIX H
S
Index
M
Memory List Editing . . . . . . . . . . . . .35
Memory Page . . . . . . . . . . . . . . . . . .37
Menu Page . . . . . . . . . . . . . . . . . . . .59
Message Page . . . . . . . . . . . . . . . .12, 56
Messages . . . . . . . . . . . . . . . . . . .74, 75
Moving Map Page . . . . . . . . . . . .10, 51
N
NMEA Interface . . . . . . . . . . . . . . . . .61
National Weather Service . . . . . . . . . .16
Navigation Guidance Page . . . . . . . . .48
Navigation Setup . . . . . . . . . . . . . . . .59
Navigation Simulator . . . . . . . . . . . . .63
Nearest Waypoint Page . . . . . . . . . . .23
Ni-Cad Battery Pack . . . . . . . . . . . .6, 69
O
On-Route GOTO’s . . . . . . . . . . . . . . .47
P
Packing List . . . . . . . . . . . . . . . . . . . . .ii
Panning Function . . . . . . . . . . . . . . .52
Poor GPS Coverage . . . . . . . . . . . . . .19
Position Format . . . . . . . . . . . . . . . . .59
Position Page . . . . . . . . . . . . . . . . .7, 21
Power Override . . . . . . . . . . . . . . . . .38
Powering Up . . . . . . . . . . . . . . . . . . . .6
Priority Scan . . . . . . . . . . . . . . . . . . .31
R
Range Rings . . . . . . . . . . . . . . . . . . .51
Receiver Status . . . . . . . . . . . . . . . . .19
Reference Waypoints . . . . . . . . . . . . .26
Renaming Waypoints . . . . . . . . . . . . .27
Route Navigation . . . . . . . . . . . . . . . .42
80
Satellite Status Page . . . . . . . . . . . .6, 18
Scan Timeout . . . . . . . . . . . . . . . . . .32
Scanning Modes and Setup . . . . . . . .31
Scanning Waypoints . . . . . . . . . . . . .28
Screen Backlighting and Contrast . . . .50
Selecting Channel 16/9 . . . . . . . . . . .16
Selecting Map Scales . . . . . . . . . . . . .52
Selecting a Channel . . . . . . . . . . . . . .14
Selecting a GOTO Destination . . . . . .39
Selecting a Weather Channel . . . . . . .16
Selecting an Operating Band . . . . . . .32
Signal Strength Bars . . . . . . . . . . . . . .18
Simulator Mode . . . . . . . . . . . . . . . . .63
Sky View . . . . . . . . . . . . . . . . . . . . . .18
Specifications . . . . . . . . . . . . . . . .72, 73
Speed, Track, and Position . . . . . . . . .63
System Setup . . . . . . . . . . . . . . . . . . .57
T
Time Format . . . . . . . . . . . . . . . . . . .50
Time Offset . . . . . . . . . . . . . . . . . . . .67
Time Offset Chart . . . . . . . . . . . . . . .78
Tips on Transmitting . . . . . . . . . . . . .15
Tips on Using TracBack . . . . . . . . . . .41
Tone Settings . . . . . . . . . . . . . . . . . . .50
TracBack . . . . . . . . . . . . . . . . . . . . . .40
Track Log Display . . . . . . . . . . . . . . .55
Track Log Setup Page . . . . . . . . . . . . .54
Track Method . . . . . . . . . . . . . . . . . .55
Track Setup Window . . . . . . . . . . . . .54
Transmitting . . . . . . . . . . . . . . . . . . .15
Tri Watch . . . . . . . . . . . . . . . . . . . . .30
Trickle Charger . . . . . . . . . . . . . . . . .69
Trip Odometer . . . . . . . . . . . . . . . . . .21
U
Unit Description . . . . . . . . . . . . . . . . .2
Units of Measure . . . . . . . . . . . . . . . .60
Using the Compass Page . . . . . . . . . .50
Using the Highway Page . . . . . . . . . .49
Using the VHF Transceiver . . . . . . . . .14
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APPENDIX H
V
VHF Communication Pages . . . . . . . .29
VHF Line-of-Sight . . . . . . . . . . . . . . .33
VHF Status Field . . . . . . . . . . . . . . . . .7
Index
W
Warranty . . . . . . . . . . . . . . . . . . . . . .80
Waypoint Comments . . . . . . . . . . . . .27
Waypoint Definition Page . . . . . . . . . .25
Waypoint List Page . . . . . . . . . . . . . .24
Waypoint Submenus . . . . . . . . . . . . .23
Waypoints . . . . . . . . . . . . . . . . . . . . .22
Weather Alert Page . . . . . . . . . . . . . .30
Welcome Page . . . . . . . . . . . . . . . . . .64
Wrist Strap . . . . . . . . . . . . . . . . . . . .67
Z
Zooming and Panning . . . . . . . . . . . .52
81
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Page 82
LIMITED WARRANTY
GARMIN Corporation warrants this product to be free from defects in materials
and workmanship for one year from the date of purchase. GARMIN will, at its sole
option, repair or replace any components which fail in normal use. Such repairs or
replacement will be made at no charge to the customer for parts or labor. The customer is, however, responsible for any transportation costs. This warranty does not
cover failures due to abuse, misuse, accident or unauthorized alteration or repairs.
GARMIN assumes no responsibility for special, incidental, punitive or consequential
damages, or loss of use.
The warranties and remedies contained herein are exclusive and in lieu of all
other warranties expressed or implied, including any liability arising under warranty of merchantability or fitness for a particular purpose, statutory or otherwise. This
warranty gives you specific legal rights, which may vary from state to state.
To obtain warranty service, call the GARMIN Customer Service department
(913-397-8200) for a returned merchandise tracking number. The unit should be
securely packaged with the tracking number clearly marked on the outside of the
package, and sent freight prepaid and insured to a GARMIN warranty service station.
A copy of the original sales receipt is required as the proof of purchase for warranty
repairs. GARMIN reatins the exclusive right to repair or replace the unit or software
at its sole discretion.
170 cover
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Page 4
®
© 1997 GARMIN CORPORATION
1200 E. 151st Street, Olathe, KS USA 66062
GARMIN (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9AQ U.K
Part Number 190-00093-00 Rev. D
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