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TFM-500
VHF/UHF FM AIRBORNE TRANSCEIVER
(P/N’s 971083-1, 3 - VHF Guard Module)
Installation and
Operating Instructions
TiL Document No. 98RE243
Rev. N/C Issue 12
NOVEMBER 2013
Technisonic Industries Limited
240 Traders Boulevard, Mississauga, Ontario L4Z 1W7
Tel: (905) 890-2113 Fax: (905) 890-5338 www.til.ca
Copyright by Technisonic Industries Limited. All rights reserved.
IMPORTANT
INFORMATION
As of January 1
st
, 2013, the FCC will no longer allow transceivers to be delivered to the
USA that are capable of wide band (25kHz) channel spacing in the commercial 2 way mobile / base sections of the VHF and UHF bands. TDFM-500 transceivers delivered to the USA after this date will no longer support wide band operation.
REVISION HISTORY
[
98RE243
]
REV
SECTION
- PAGE -
DESCRIPTION
Rev. N/C
Issue 8
CR 07030
98RE243
Document was updated from one program format to another. See *Note.
Grammar and spelling check was done.
Corrected typos, etc. as needed or found.
Issue 9 CR 08380 Added Revision page and added para. §1.5
Pg A Renamed Note to FCC Compliance Information
Pg i
Pg 1-2
Pg 3-5
Table of Contents re-aligned
Note: add 0.5" allowance for cable to dim. D and dim. (D) of 8.50” changed back to 8.0” renamed paragraph. 3.7.0 to 3.7
Issue 10 Section 3 Added test flight option to Glide slope test
Issue 11 Global New Document Template, Title Page changed,
Revision Page changed, added Edited By column,
Jan 01, 2013 FCC narrowband notice added, and added Warranty Page
DATE
SEP 2007
NOV 2008
AUG 2010
JAN 2013
Issue 12 Title Page Corrected the date
All Grammar and spelling check was done.
Corrected typos, etc. as needed or found.
NOV 2013
EDITED
BY
FM
AL i
ESD CAUTION
This unit contains static sensitive devices. Wear a grounded wrist strap and/or conductive gloves when handling printed circuit boards.
FCC COMPLIANCE INFORMATION
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his/her own expense.
Do not use the TFM-500 in the frequency band 406.0 MHz – 406.1 MHz. This band reserved for distress beacons.
WARNING AND DISCLAIMER
Changes or modifications not expressly approved by Technisonic Industries could void the user’s authority to operate the equipment.
This manual is designed to provide information about the TFM-500. Every effort has been made to make this manual as complete and accurate as possible.
WARRANTY INFORMATION
The Model TFM-500, VHF/UHF/FM Transceivers are under warranty for one year from date of purchase.
Failed units caused by defective parts or workmanship should be returned to:
Technisonic Industries Limited
240 Traders Boulevard
Mississauga, Ontario L4Z 1W7
Tel: (905) 890-2113
Fax: (905) 890-5338 ii
Summary of DO-160C Environmental Testing
Summary of DO-160C Environmental Testing for Technisonic Model TFM-500, VHF / UHF Transceiver:
Conditions Section Description of Conducted Tests
Temperature and Altitude 4.0
Vibration
Magnetic Effect
Power Input
8.0
15.0
16.0
Equipment tested to categories B2 and D1.
Equipment is tested without shock mounts to categories B, M and N.
Equipment is class A.
Equipment tested to category B.
Voltage Spike 17.0 Equipment tested to category B.
RF Emission 21.0 Equipment tested to category Z.
INSTALLATION APPROVAL NOTE
Presently no TSO standard exists for airborne FM transceivers. To make it easier for installation agencies to provide their customers with an approved installation supported by an effective Airworthiness Approval,
Technisonic has secured Supplemental Type Certificate (STC) Approvals (both US and Canadian) on its
Airborne FM products for many helicopters currently being delivered in the US and Canada as well as a number of single engine fixed wing aircraft. The above referenced DO-160C test data is also on file and available from Technisonic to support approval requirements in airframes for which Technisonic does not possess an STC.
Approved aircraft types are listed in the attachments to the formal STC documents. These STC's are the exclusive property of Technisonic and require the written authority of Technisonic for their use. To assist
Factory Authorized Technisonic Dealers in the certification process, we have placed copies of our
Canadian and US STC's on our web site along with a letter of authorization for their use. These documents may be downloaded and used as support for the technical submission to FAA or Transport
Canada. Only authorized factory dealers/installers are permitted to download and make use of these documents on behalf of their customers (end users) in support of regulatory agency approval. Please refer to the Technisonic web site www.til.ca for the latest issue of available STC’s and letter of authorization for use. iii
TECHNISONIC INDUSTRIES LIMITED www.til.ca
TABLE OF CONTENTS
SECTION
SECTION 1 GENERAL DESCRIPTION
TITLE PAGE
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.7.1
3.7.2
3.7.3
3.7.4
3.7.5
3.7.6
3.7.7
3.7.8
3.7.9
3.8
3.9
1.1
1.2
1.3
Introduction ........................................................................................................................... 1-1
Description ............................................................................................................................ 1-1
Purpose of Equipment .......................................................................................................... 1-1
1.4
1.5
Model Variation ..................................................................................................................... 1-1
Technical Characteristics ...................................................................................................... 1-2
SECTION 2 OPERATING INSTRUCTIONS
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
Features ................................................................................................................................. 2-1
Operating Instructions ........................................................................................................... 2-3
Programming Instructions ..................................................................................................... 2-4
Priority and Selective Memory Channel Scanning ................................................................ 2-5
Scanning Function ................................................................................................................ 2-5
Direct Frequency Entry Mode ............................................................................................... 2-6
Receive Frequency Simplex Function .................................................................................. 2-6
Keyboard Lockout Function .................................................................................................. 2-6
Variable Frequency Mode Function ...................................................................................... 2-6
LED Display Variable Dimming Mode ................................................................................... 2-7
90 Second Transmitter Timeout Feature .............................................................................. 2-7
Quick Guard Programming Feature ...................................................................................... 2-7
Programming CTCSS Tones ................................................................................................ 2-7
PC Memory/Programming Download Capability ................................................................... 2-9
Installing the Multi-TDP Program .......................................................................................... 2-10
Using the Multi-TDP Program ............................................................................................... 2-10
SECTION 3 INSTALLATION INSTRUCTIONS
General ................................................................................................................................. 3-1
Equipment Packing Log ........................................................................................................ 3-1
Transceiver Installation ......................................................................................................... 3-1
Installation Kit - Contents ...................................................................................................... 3-1
Antenna Installation ............................................................................................................... 3-1
Installation - Pin Locations and Connections ........................................................................ 3-1
Wiring Instructions ................................................................................................................ 3-5
Main Power +28VDC ............................................................................................................ 3-5
Main Ground ......................................................................................................................... 3-5
PTT (Ground Keying) ............................................................................................................ 3-5
Front Panel Back Lighting ..................................................................................................... 3-5
Audio Outputs (600 and 4 Ohms) ......................................................................................... 3-5
Audio Output Ground ............................................................................................................ 3-5
Mic Signal Input ..................................................................................................................... 3-5
Memory Up/Memory Down ................................................................................................... 3-5
Data Input .............................................................................................................................. 3-6
Internal Programming and Guard Enable/Disable Jumper ................................................... 3-6
Transmitter Power Adjustments ............................................................................................ 3-7
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3-2
TABLE
2-1
2-2
3-1
3-1
3-2
3-3
3-4
3-5
3-6
FIGURE
2-1
2-2
3-0
TECHNISONIC INDUSTRIES LIMITED www.til.ca
3.10
3.11
3.12
Transmitter Microphone Level Adjustment ........................................................................... 3-7
Squelch Adjustment .............................................................................................................. 3-9
Transmitter Deviation Adjustment ......................................................................................... 3-9
APPENDIX
Appendix to Post Installation Instructions ............................................................................. A-1
Post Installation EMI Test ..................................................................................................... A-1
LIST OF FIGURES
TITLE PAGE
Operator's Switches and Controls ......................................................................................... 2-2
TFM-500 Transceiver PC Up/Download Cable - Wiring Diagram ........................................ 2-10
Transceiver Mounted View of 15 Pin Female and 9 Pin Male Connector ............................. 3-1
Outline Drawing ..................................................................................................................... 3-2
Wiring Connections ............................................................................................................... 3-4
Internal Enable/Disable Jumper Locations ........................................................................... 3-6
External Adjustment Access Holes ....................................................................................... 3-8
VHF Deviation Adjustment Potentiometer Location .............................................................. 3-10
UHF Deviation Adjustment Potentiometer Location .............................................................. 3-11
LIST OF TABLES
TITLE PAGE
Available CTCSS tones ......................................................................................................... 2-8
Usable and Unique Octal 3 Digit DPL/DCS .......................................................................... 2-9
Wire Connections on a 9 Pin MALE D Connector ................................................................ 3-3
Wire Connections on a 15 Pin FEMALE D Connector .......................................................... 3-3
TFM-500 Installation & Operating Instructions v
TiL 98RE243 Rev. N/C Issue 12
TECHNISONIC INDUSTRIES LIMITED www.til.ca
SECTION 1 - GENERAL DESCRIPTION
1.1 INTRODUCTION
This publication provides installation and operating information on the TFM-500 Transceiver manufactured by Technisonic Industries Limited. The unit offers an extended frequency range with selectable channel spacing and is intended for use (in the U.S.) only by government agencies or contractors thereto, who have obtained licensing for operation in the 138-150 MHz portion of the band. If the TFM-500 transceiver is used in CANADA, VHF operation is restricted to the following sub bands: 138-144, 148-148.99, 149.005-150.005 and 150.05-174 MHz.
1.2 DESCRIPTION
The TFM-500 Transceiver is a frequency agile, fully synthesized airborne transceiver capable of operating in the 138 to 174 MHz and 403 to 512 MHz frequency range in 2.5 kHz increments with either 25 kHz or 12.5 kHz channel spacing. The Transceiver can operate without restriction on any split frequency pair in either band and also incorporates a two channel VHF synthesized guard receiver.
The TFM-500 Transceiver provides 200 operator accessible memory positions per band, each of which is capable of storing a transmit frequency, receive frequency, transmit frequency CTCSS tone or DPL code, receive frequency CTCSS tone or DPL code, an alphanumeric identifier for each channel, and wideband (25 kHz) or narrowband (12.5 kHz) channel spacing assignment.
Operating frequency and other related data are presented on a 96 character, 4 line LED matrix display. Data entry and function control are performed via a 12-button keypad. Preset channels may also be scrolled and scanned through keypad function activation. Data may also be entered via a Windows 95/98/ME/NT/2000 based computer with the provided software and optional PC
Up/download cable, P/N 993390-1.
1.3 PURPOSE OF EQUIPMENT
The TFM-500 VHF/UHF FM Transceiver is designed to provide secondary airborne communications to facilitate operations that are typically performed in a low altitude environment.
The transmitter sections of this unit have a minimum of 8 watts and do not exceed 10 watts output power, which may be reduced by a front panel switch to 1 watt, in order to reduce interference to land based systems.
1.4 MODEL VARIATION
There are four variations of the Model TFM-500 Transceiver. All units offer identical features and performance except for the following differences:
TFM-500, P/N 971083-1 GREEN display and 28 volt back lighting.
TFM-500, P/N 971083-1 (5V) GREEN display and 5 volt back lighting.
TFM-500, P/N 971083-3
TFM-500, P/N 971083-3 (5V)
RED display and 28 volt back lighting.
RED display and 5 volt back lighting.
Both P/N's 971083-1 and 971083-3 are always provided with 28 volt back lighting unless a specific request is made for a 5 volt AC operation.
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1.5 TECHNICAL CHARACTERISTICS
Characteristic Specification
GENERAL
Model Designation:
Frequency Range:
Tuning Increments:
Operating Mode:
Channel Spacing:
Physical Dimensions (incl. heat sink):
Weight:
Mounting:
Operating Temperature Range:
Power Requirement:
Voltage:
Current:
Frequency Selection:
Guard Receiver:
CTCSS squelch/encoder:
DPL
1
digital squelch/encoder:
DTMF encoder:
Audio Outputs:
Speaker Output:
Back Lighting:
Display Colour:
1
DPL is a trademark of Motorola Corporation
TFM-500
138 to 174 and 403 to 512 MHz
2.5 kHz
F3E simplex or semi-duplex
25 or 12.5 kHz
Approx. (W) 5.75" x (H) 3.75" x (D) 8.0"
Note: add 0.5" allowance for cable to dim. D
Approx. 5.1 Lbs (2.3 Kg)
Panel Mount via Dzus fasteners
-40° C to +60° C
28.0 VDC ± 15%
Receive - 1.0 A Max.
1 watt Transmit - 2.0 A Max.
8-10 watt Transmit - 3.2 A Max.
8-10 watt Dual Transmit - 5 A Max.
200 memories per band programmed with:
a) Tx Frequency/Rx Frequency
b) Tx/Rx CTCSS tone or DPL code
c) 9-character alphanumeric title
2 channels programmed with:
a) Tx Frequency/Rx Frequency
b) Tx CTCSS tone or DPL code
c) 9-character alphanumeric title
All CTCSS tones available
All standard DPL codes
All standard DTMF tones
0.5 watts into 600 Ω
2.5 watts min. into 4 Ω
28 volts (standard) or 5 volts (specify)
Green (standard) or Red (specify)
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1.5
TECHNISONIC INDUSTRIES LIMITED www.til.ca
TECHNICAL CHARACTERISTICS (continued)
VHF RECEIVER
Sensitivity at 12 dB SINAD
Adjacent Channel Selectivity
Spurious Attenuation
Third Order Intermodulation
Image Attenuation
FM Acceptance
Hum and Noise
Audio Distortion
Antenna Conducted Emission
Better than 0.35 µV
-75 dB (25 kHz)
-70 dB (12.5 kHz)
-90 dB
-70 dB
-80 dB
±6 kHz
Better than 45 dB
Less than 5%
Less than -70 dBm
UHF RECEIVER
Sensitivity at 12 dB SINAD
Adjacent Channel Selectivity
Spurious Attenuation
Third Order Intermodulation
Image Attenuation
FM Acceptance
Hum and Noise
Audio Distortion
Antenna Conducted Emission
Better than 0.35 µV
-70 dB (25 kHz)
-60 dB (12.5 kHz)
-80 dB
-70 dB
-60 dB
±6 kHz
Better than 40 dB
Less than 5%
Less than -70 dBm
GUARD RECEIVER
All specifications identical to VHF receiver
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1.5
TECHNISONIC INDUSTRIES LIMITED www.til.ca
TECHNICAL CHARACTERISTICS (continued)
VHF and UHF TRANSMITTER
RF Power Output
Output Impedance
Maximum Deviation
(In narrowband mode)
Spurious Attenuation
Frequency Stability
Microphone Circuit
Sidetone Output
Harmonic Attenuation
FM Hum And Noise
Audio Input
Audio Distortion
1 watt or 10 watts
50 Ω
±5 kHz (25 kHz mode)
±2.5 kHz (12.5kHz mode)
-90 dB below carrier level
±2.5 ppm
Carbon or equivalent
0.5W (max) into 600 Ω
-65 dB below carrier level
-40 dB
50 mV at 2.5 kHz into
200 Ω input circuit for
±3.5kHz deviation, adjust.
Less than 5%
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TECHNISONIC INDUSTRIES LIMITED www.til.ca
SECTION 2 – OPERATING INSTRUCTIONS
2.1 FEATURES
The equipment has several important operating features that provide maximum flexibility, performance, and versatility. These features include:
1. VHF and UHF bands that can be configured to be operated independently or as a single unit.
2. The unit can be set up as a cross band repeater, linking a VHF and UHF frequency in both directions.
3. 200 memory positions per band which can each be programmed with a transmit and receive frequency with 25 or 12.5 kHz channel spacing, Tx/Rx CTCSS tones or DPL codes, and a 9character alphanumeric title.
4. 2 guard channels that can each be programmed with an Rx frequency with 25 or 12.5 kHz channel spacing, CTCSS Tx tone or DPL code, and a 9 character alphanumeric title.
5. Scanning of pre-programmed memories with selective memory scanning, in 5 scan lists.
6. Priority scans of memory channel 1, if desired.
7. Direct frequency entry mode.
8. Receive frequency simplex function.
9. RF output power is switchable between 1 watt and 8-10 watts.
10. Lockout of keyboard to prevent inadvertent entries.
11. Variable frequency mode to manually scan up and down in 2.5 kHz steps.
12. LED display variable dimming mode.
13. Selectable 90 second Tx time out feature.
14. Quick download of any of the VHF memory positions to the guard memories.
15. PC Memory Upload or Download capability.
16. Configuration Menu – Pressing ENTER , RCL, and FUNC together while turning the radio
ON, will put it into the configuration mode. The programming features affected are: a) DPL – DPL can be turned ON or OFF with the M.UP and M.DN (4 and 7) keys. This only removes the DPL entry step from the programming sequence and does not stop memories that already have DPL codes from working. This also applies to the rest of the on/off configurable items. b) Scan – Scan can be disabled. Selecting FUNC and SCAN will do nothing if Scan is OFF.
The scan list indicator (+) will still display if was previously programmed.
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TiL 98RE243 Rev. N/C Issue 12
TECHNISONIC INDUSTRIES LIMITED www.til.ca c) Rx CTCSS – Rx CTCSS Can be turned on or off from the programming sequence. This affects only the CTCSS tones for receive. d) FUNC 7 – FUNC 7 can be turned ON or OFF. While OFF, the main memory channel cannot be dumped into one of the guard channels using Function 7. e) LAST MEM – If set to on, the last memory channel on the display will be what shows up when the radio is turned on. If LAST MEM is set to OFF, the last memory changes will be displayed when the unit is switched on. f) DUALMODE – If set to on, the UHF and VHF bands are operated independently and simultaneously. The radio is shipped with this feature OFF. g) SIDETONE – The TX audio circuit becomes active allowing you to adjust the sidetone level with the VHF volume knob. When the desired level is reached, press ENTER and this level will be set for both VHF and UHF bands. The factory setting is 23.
NOTE: You must set the side tone every time you go through the configuration menu since the position of the knob is taken as the new level regardless of whether or not you made an adjustment.
FIG. 2.1
Operator's Switches and Controls
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TECHNISONIC INDUSTRIES LIMITED www.til.ca
2.2 OPERATING INSTRUCTIONS (See Figure 2.1)
1. Switch power ON by turning the main volume clockwise. Depending how the radio is configured, either the last programmed or last displayed frequencies will appear on the screen.
The transceiver is now in normal operating mode.
2. Adjust the audio level by adjusting the VHF, UHF, and GUARD volume knobs.
3. Pressing the squelch defeat button will open all receivers to confirm they work.
4. Read the display. The top line will indicate which VHF memory is selected followed by a "+" if the memory position is included in a scan list, an alphanumeric message, and the frequency of the VHF receiver. A small "n" before the frequency indicates 12.5 kHz narrowband channel spacing is in effect on this memory position. In the receive mode, the frequency is followed by an
"RT" if a RX CTCSS tone or RX DPL code is programmed, or an "RX" if no Receive tone/code is programmed. Similarly, in the transmit mode either a "TT" or "TX" is shown after the frequency.
The second line shows the same information for the UHF band. The third line indicates information about the guard receiver.
5. Only TX CTCSS tones or TX DPL codes may be programmed for the guard receiver. At the beginning of each line, an LED indicates open squelch.
6. Set the VHF/UHF/GD switch to the desired band.
7. Set the G1/G2 switch to the desired guard channel.
8. Set the HI/LO switch to the desired RF output power.
9. Select the desired memory by using the M.UP and M.DN buttons, or the RCL button and a three digit number followed by ENTER.
10. To transmit DTMF tones, use the keyboard keys while holding the PTT button on the microphone. There is a 5 second PTT delay after pressing a key so that you may press several
DTMF keys in sequence without having to hold the PTT. The keyboard returns to its normal function when the PTT is released.
The display always shows the status of both receivers and the transmitter. The light at the left of each line indicates which receiver is receiving. The display also indicates the memory channel in use and the guard channel in use. A "TX" (no TX tone/codes programmed) or "TT"(either TX tone or code programmed) on the right side of the display indicates which band is active when transmitting. The transmit frequency is also shown. In the receive mode the display shows “RX” beside the receive frequency if no RX tone or DPL code is programmed and “RT” if a CTCSS tone or DPL code is programmed.
While in any programming mode, all receivers continue to function.
When the transceiver is in either of the operating frequency or CTCSS tone/DPL code programming modes and you must respond to a call, click the microphone PTT once (the radio will not transmit during this click). This will cause the transceiver to revert back to the normal operating mode and communications with the caller can proceed in the usual fashion.
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2.3 PROGRAMMING INSTRUCTIONS
To program one of the 200 memory channels in one of the bands:
1. Select the desired band on the band select (VHF/UHF/GD) switch. This is required before any of the programming modes or functions.
2. Press the FUNC key. The display will show the function prompt.
3. Press the PROG key. The display will show the current receive frequency with a flashing curser on the first or second digit (The first digit is always a one (1) on the VHF band).
4. Type in the desired RECEIVE frequency. If you type in a frequency which is not a 2.5 kHz step, the nearest valid frequency will be automatically selected.
5. The curser will return to the second digit. You can retype the frequency if you have made an error or press ENTER to continue.
6. The transmit frequency will be displayed with the curser on the second digit. Follow the same method as in step 3 and 4.
7. The channel spacing increment of either 25.0 or 12.5 kHz is now displayed. Use the M.UP
and
M.DN
keys to select the desired channel spacing for the memory position and then press ENTER .
8. The alphanumeric title is now displayed. Use the M.UP
and M.DN
keys to scroll through the alphabet, numbers, and symbols. When the desired character is displayed, press ENTER to advance to the next character and press “1" to backspace.
9. Keep repeating step six until the last space is set. The display will show SCAN or LOCKOUT to enable this memory position as part of a scan list or lock it out of the scan list. Use the 1 , 2 , 3, 4 ,
5, and M.DN
keys to toggle between these functions (for details see paragraph 2.5). Once the desired condition has been selected, press ENTER . The TFM-500’s display will show a "+" beside the memory channel number if scan is enabled.
10. The display will now show the current memory number. Type-in the 3-digit number of the memory you want to save (if different from displayed one) and press ENTER .
11. You now have the option to program the Guard frequencies by pressing FUNC or press
ENTER to return to normal operating mode.
12. If you pressed FUNC to program the Guards, Guard "1" transmit frequency will be displayed with the flashing curser on the second digit. Enter the frequencies for Guard "1" receive/transmit and Guard "2" receive/transmit as in step 3 and 4.
13. The alphanumeric labels for Guard "1" and Guard "2" are entered the same as in step 7 and
8. When the last character is entered, the radio returns to normal operating mode.
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2.4 PRIORITY SCANNING, SELECTIVE MEMORY CHANNEL SCANNING AND SCAN
LISTS
Instead of breaking up the 200 channels into blocks for scanning, the TFM-500 has 5 scan lists per band. Any of the 200 channels can be assigned to any one or more of these 5 scan lists.
This means the channels do not have to be repeated for them to be in more than one block. You are not limited to the number of channels that you can scan at once.
The priority memory channel is always memory position number 1. The priority memory channel is scanned every other step (i.e. 121314151...) to ensure that no incoming messages are missed.
The priority channel can be locked out, which will result in the normal scanning of the other memory positions.
Selective memory scanning allows the user to select which of the 200 memory channels are to be scanned or locked out when the scan function is invoked. To use this feature, follow the
PROGRAMMING INSTRUCTIONS found in paragraph 2.3. Once the screen displays SCAN or
LOCKOUT , use the 1, 2, 3, 4, 5, or M.DN
keys to toggle to the desired condition. The M.DN button acts as a CLEAR while pressing one or more of the above numbers adds the memory to the corresponding scan list or lists. Press ENTER when you are happy with your selection. In normal operating mode the display will later show a "+" beside the memory channel number if it has been included in any of the 5 scan lists.
NOTE: Scanning can only be performed on one band (either VHF or UHF) at a time.
When the transceiver is in the single mode (combined VHF and UHF audio) and the scan feature has been invoked on one band, it will be interrupted when transmitting on the other band. In the Dual mode, you are able to transmit on the second band without affecting the scan function on the first.
2.5 SCANNING FUNCTION (5-Second Talkback Delay)
Select the band you wish to scan with the band switch. (You cannot scan the guard). To start scanning of the memory channels, press FUNC then SCAN and then the number (1, 2, 3, 4, and
5) of the desired scan list.
The radio will scan through all the preset memory positions in the selected scan list (see above paragraph for priority and selective scan features) and will lock on to the first active channel in the scan sequence. It will remain on the channel until it becomes inactive. Scanning will resume again after five seconds of inactivity. To exit the scan mode, press the SCAN key. This will cause the radio to revert back to the normal operating mode.
If while scanning, you hear a call for you:
1. Respond to the call within five seconds. When scanning is interrupted by an incoming signal, the channel will remain open for five seconds before resuming scanning.
2. During communications the five-second timer is reset from the last Rx or Tx signal encountered.
The radio resumes scanning once the Rx or Tx activity has ceased for more than five seconds.
The SCAN key must be pressed to exit the scan mode.
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2.6 DIRECT FREQUENCY ENTRY MODE
This mode is designed to facilitate quick frequency selection during emergency and other operational conditions requiring direct operating frequency selection. This operating mode is disabled along with the programming mode when the internal disable jumper is set.
1. When the transceiver is in the normal operating mode, press FUNC and the desired operating frequency i.e. 153.2750.
2. On the UHF band press FUNC and then 1 and the desired frequency i.e. 443.5500.
3. You will then be asked for 12.5 or 25.0 kHz channel spacing. Select with M.UP
or M.DN
and press ENTER .
Please note in the above operation, after FUNC and " 1 " are entered, the LED display will show memory channel "000" and then the remaining digits in the desired frequency are shown as they are entered. No alphanumeric message can be entered in this mode. Operation on the new frequency occurs in both transmit and receive (simplex only) modes. If RX or TX CTCSS tones/DPL codes are required, they must be programmed in afterwards.
2.7 RECEIVE FREQUENCY SIMPLEX FUNCTION
The receive frequency simplex function allows you to quickly change the transmit frequency, when operating on a split pair (repeater/semi-duplex mode), to the receive frequency to allow direct communications. For example, if you are transmitting on 152.000 MHz and receiving
152.555 MHz, select VHF on the band select switch and press FUNC then UP to transmit on
152.555 MHz. To return to the split pair condition, you must recall the memory channel again.
This is done by quickly pressing M.UP
for one step up; then back down one step with the M.DN
key.
2.8 KEYBOARD LOCKOUT FUNCTION
The keyboard can be locked out so that accidental pressing of keys does not change frequency, etc., unknowingly to the operator. To lock the keyboard, press FUNC and then LOCK . This will disable all keyboard functions (except keyboard unlock) in the receive mode. The DTMF function will not be affected during transmit. To unlock the keyboard, press and hold the LOCK key for two seconds until the display indicates "UNLOCK."
2.9 VARIABLE FREQUENCY MODE FUNCTION
To enter variable frequency mode, press RCL , 0 , 0 , 0 , then ENTER or enter a frequency in the direct entry mode described above. The memory channel that you were just in will still be valid but now you can manually adjust the frequency with the M.UP, M.DN, UP, and DN keys. The UP and DN keys will cause the frequency count up or down in steps of 2.5 kHz. The M.UP
and M.DN
keys will cause the frequency count up or down in steps of 1 MHz.
You cannot change the label. The frequency in this mode cannot be stored in memory. To exit this mode, recall one of the 200 memory channels (i.e. RCL , 0 , 0 , 1). Variable frequency mode is disabled when the internal entry disable jumper is set.
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2.10 LED DISPLAY VARIABLE DIMMING MODE
1. To increase or decrease the intensity of the LED display, press the UP or DN keys with the transceiver in normal operating mode.
2. Once maximum intensity of the display is achieved, the UP key no longer functions.
Conversely, once minimum intensity is reached, the DN key ceases to function.
2.11 90-SECOND TRANSMITTER TIMEOUT FEATURE
A selectable 90-second transmitter time out feature is provided to prevent accidental continuous transmission in the event of a faulty PTT switch. With this feature enabled, the transceiver will stop transmitting after the PTT is engaged continuously for 90 seconds. To reset the timer … release the PTT switch, then re-engage the PTT switch again.
Press the FUNC then the M.UP
key. Use the M.UP
and M.DN
keys to select 90 SEC, which enables the feature, or NONE which disables it.
2.12 QUICK GUARD PROGRAMMING FEATURE
A quick download of any of the 200 VHF memory positions into either of the guard memory positions can be accomplished. Select the memory position whose contents you desire to download to a guard memory. Select either GD1 or GD2 memory channel as desired. Press
FUNC then 7. The guard memory channel will now contain all the same information as the selected memory position. This feature is disabled when the FUNC 7 mode is turned off in the configuration menu.
2.13 PROGRAMMING CTCSS TONES/DPL CODES
CTCSS tones (PL tones) or Digital DPL codes can be assigned to each memory channel. The guard receiver squelch will operate on noise squelch only, but Guard 1 and 2 transmit tones or codes can be programmed. To program a tone/code to a memory channel:
1. Select the desired band on the band select switch.
2. Use the M.UP
and M.DN
keys to select the memory channel that you want to assign a CTCSS tone or DPL code.
3. Press the FUNC key then the TONE key. The display will show "RX TONE:" and the current tone number, as well as the tone frequency in Hz.
4. Use the M.UP
and M.DN
keys to select the tone number you require.
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2.13 PROGRAMMING CTCSS TONES/DPL CODES (continued)
The following is a list of the available CTCSS tones:
Number Tone
1 67
2 71.9
3 74.4
4 77
5 79.7
6 82.5
7 85.4
8 88.5
9 91.5
10 94.8
Number Tone
26 162.2
27 167.9
28 173.8
29 179.9
30 186.2
31 192.8
32 203.5
33 33.0*
34
35
35.4*
36.6*
Number Tone
51 177.3*
52 183.5*
53 189.9*
54 196.6*
55 199.5*
56 206.5*
57 210.7*
58 218.1*
59
60
225.7*
229.1*
11 97.4 36 37.9* 61 233.6*
12 100 37 39.6* 62 241.8*
13
14
103.5
107.2
38
39
44.4*
47.5*
63
64
250.3*
No Tone
15 110.9 40 49.2* (carrier squelch only)
16 114.8 41 51.2*
17 118.8 42 53.0*
18 123 43 54.9*
19 127.3 44 56.8*
20
21
22
23
131.8
136.5
141.3
146.2
45
46
47
48
58.8*
63.0*
69.4*
159.8*
165.5* 24 151.4 49
25 156.7 50 171.3*
TABLE 2.1
Available CTCSS Tones
NOTE: The tones marked with * are non-standard tones.
5. Press ENTER. "TX TONE" appears on the display. Repeat step 3.
6. Press ENTER. "G1 TONE" appears on the display. Repeat step 3.
7. Press ENTER. "G2 TONE" appears on the display. Repeat step 3 and press ENTER.
8. The display will now show "RX DPL:" and the current 3 digit DPL code. If no DPL code is required, "000" should be entered. Please note that if a DPL code is to be programmed a CTCSS tone should not be enabled.
9. Use the keypad to enter the required octal 3 digit DPL (Digital Coded Squelch or DCS) code. A list of all usable and unique octal 3 digit DPL/DCS codes follows:
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017*
23
25
26
31
32
036*
43
47
51 116 156 243 266* 346
053* 122* 162 244 271 351
54 125 165 245 274* 356*
65 131 172 246* 306 364
71 132 174 251 311 365
72 134 205 252* 315 371
73 143 212* 255* 325* 411
74 145* 223 261 331 412
114 152 225* 263 332* 413
431 466 612 721
432 503 624 731
445 506 627 732
446* 516 631 734
452* 523* 632 743
454* 526* 654 754
455* 532 662
462* 546 664
464 565 703
050* 115 155 226 265 343 423 465 606 712
TABLE 2.2
Usable and Unique Octal 3 Digit DPL/DCS
NOTE: * indicates GE Digital Coded Squelch (DCS) Code
10. Press ENTER. "TX DPL" appears on the display. Repeat step 8.
11. Press ENTER. "G1 DPL" appears on the display. Repeat step 8.
12. Press ENTER. "G2 DPL" appears on the display. Repeat step 8 and press ENTER.
2.14 PC MEMORY PROGRAMMING UPLOAD/DOWNLOAD CAPABILITY
The TFM-500 transceiver can be programmed by a Windows based personal computer using
Technisonic software supplied on CD with each TFM-500.
Requirements:
1. A PC compatible computer with a CD ROM drive, running Windows 95/98/ME/NT/2000.
2. A bench power supply of 28 volts DC.
3. A PC download cable, P/N 993390-1, which can be supplied or made from the wiring diagram at the back of this section.
Connections:
1. With the PC turned off, plug the 25 pin male 'D' connector into a serial port.
2. Plug the 9 pin 'D' connector into the back of the TFM-500 transceiver.
3. Connect the power supply to the TFM-500.
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Installing the Multi-TDP Program:
The CD supplied with each radio contains software for all of Technisonic’s downloadable transceivers. Place the CD into your drive and use Windows Explorer to open the Multi-TDP directory on the CD. Double click the Multi-TDP_Install.exe
file. Follow the onscreen instructions to install the program onto your hard drive. When the program is installed, it can be run by selecting Programs in your Start menu, then select Technisonic from the submenu and finally
Multi-TDP .
Using the Multi-TDP Program:
With the program running on your computer, a full MultiTDP instruction manual can be loaded by selecting Documentation in PDF format under the Help menu. Otherwise, to get started, pull down the File menu and select TFM-500 . The program defaults to serial port Com1 but can be set to Com 2, 3, or 4 under the Com Port menu. The program is now ready to use. You may want to upload data from the radio and edit channels or start a new data file. The VHF and UHF bands are treated as separate radios and must be up or downloaded and edited separately.
Editing is done on a channel-by-channel basis. Set the channel number you would like to edit and then modify the frequencies, labels, CTCSS tones, DPL codes, wide / narrow band setting, and scan lists as desired. Press the Save Record button to store the changes you’ve made to the database below. After you have edited the channel list, you can save your changes to disk and/or download to the radio. Only channels selected with a check mark will download. It is recommended to use the Select All command in the Data Transfer menu to ensure the database in the radio matches the one in the PC. When download is selected, a message box will appear on your screen asking you to press FUNC and DN on the radio. Press these buttons on the radio before you click OK in the message box, otherwise the download will fail.
TFM-500 Upload/Download Programming Cable
P/N 993390-1 Wiring Diagram
FIG. 2.2
TFM-500 Transceiver PC Up/Download Cable - Wiring Diagram
NOTE: If your serial port is a 9 pin connector, instead of the 25 pin, use a FEMALE 9 pin D-connector connecting:
Yellow - pin 3
Blue - pin 2
Black - pin 5
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SECTION 3 – INSTALLATION INSTRUCTIONS
3.1 GENERAL
This section contains information and instructions for the correct installation of the TFM-500
VHF/FM Transceiver. Make certain that the correct frequencies are pre-programmed in accordance with the equipment user's valid FCC operator's license, prior to installation.
3.2 EQUIPMENT PACKING LOG
Unpack the equipment and check for any damage that may have occurred during transit. Save the original shipping container for returns due to damage or warranty claims. Check that each item on the packing slip has been shipped in the container. Verify that the equipment display and backlighting configuration are the same as those ordered.
3.3 TRANSCEIVER INSTALLATION
The TFM-500 transceiver is designed to be Dzus mounted and should be installed in conjunction with an IN-550 installation kit. See Figure 3.1 for an outline drawing of the unit with dimensions to facilitate the installation.
3.4 INSTALLATION KIT - CONTENTS
The IN-550 installation kit consists of:
1. One 15 pin Cannon D mating connector (female) complete with crimp pins and hood.
2. One 9 pin Cannon D mating connector (male) complete with crimp pins and hood.
3. Three BNC antenna mating RF connectors (male).
3.5 ANTENNA INSTALLATION
Antenna, P/N’s ATM-150 and ATM-403 may be obtained from Technisonic Industries Limited or a suitable equivalent may be utilized with the TFM-500 transceiver. The antenna should be mounted on the bottom of the aircraft whenever possible. Consult with instructions provided with the antennas. Connect RF cables from antennas to the back of the TFM-500 unit by utilizing the
BNC mating connector provided in the installation kit. The UHF connector is located on the rear, above the 15 pin D connector and the VHF connector is below the 9-pin D.
3.6 INSTALLATION - PIN LOCATIONS AND CONNECTIONS
The pin numbers and locations for the 15 pin and 9 pin Cannon D located on the rear of the TFM-
500 transceiver are shown below. Pin connections are in provided in TABLE 3.1, 3.2.
FIGURE 3.0
Transceiver Mounted View of 15 Pin Female and 9 Pin Male Connector
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3.6 INSTALLATION - PIN LOCATIONS AND CONNECTIONS
(continued)
FIGURE 3.1
Outline Views for Model TFM-500 Transceiver
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3.6 INSTALLATION - PIN LOCATIONS AND CONNECTIONS (continued)
Pin #
4
5
6
7
1
2
3
8
9
Description
600
Ω
Output 2
PTT 2 (Ground Keying)
Reset
Background Debug Signal
Ground
Programming Voltage In
Serial Data Out
Serial Data In
Mic Signal Input 2
TABLE 3.1
Wire connections on a 9 Pin MALE D Connector
Pin #
10
11
12
13
14
6
7
8
9
15
1
2
3
4
5
Description
600
Ω
Output 1
Data Output
Panel Lighting (28VDC or 5VAC)
Memory Up
Memory Down
Mic Signal Input 1
Main Power +28VDC
Main Ground
4 ohm Speaker Output
4 ohm/600 ohm Output Ground
Data Input
DF Audio
PTT 1 (Ground Keying)
Main Power +28VDC
Main Ground
TABLE 3.2
Wire Connections on a 15 Pin FEMALE D Connector
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FIGURE 3.2
Wiring Connections for the TFM-500 Transceiver
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3.7 WIRING INSTRUCTIONS
Figure 3.2 shows all required connections and recommended wire sizes for the TFM-500
Transceiver. If problems with the correct operation of the UHF/FM Transmit function of a TFM-
500 are encountered on a specific airframe, a DC power line filter may be required. Typical problems encountered are that UHF/FM will not transmit on high power or will not open a repeater when using a CTCSS transmit tone. Investigation has determined that once the ripple on the airframes DC (28V) power line becomes excessive, the UHF transmit function and tones will distort. If the airframes generators are turned off and the UHF/FM transmit function works correctly from 28 VDC battery power, the ripple on the DC power line is excessive. The use of DC power line filter PLF-250, P/N 021214-1 is recommended and is available from Technisonic.
3.7.1 Main Power +28VDC
The main power +28VDC (±15%) is connected to pins 7 and 14 of the transceiver. Both pins should be connected.
3.7.2 Main Ground
Ground connections are made on pins 8 and 15. Both pins should be connected.
3.7.3 PTT (Ground Keying)
The PTT line is connected to pin 13 and should be floating when the transceiver is in receiving mode and grounded during transmit mode. The PTT2 input is on pin 2 of the 9-pin connecter.
3.7.4 Front Panel Back Lighting
Front panel back lighting connection should be made on pin 3 of the transceiver. The opposite end of this lead should be connected to the panel lighting system of the aircraft. Before connecting, verify the required panel lighting voltage (28 VDC or 5VAC) on the transceiver configuration control label.
3.7.5 Audio Outputs (600 ohms and 4 ohms)
There are two audio outputs available (1 & 2). A 600 Ω audio output 1 has audio from both bands and the guard in single operator mode. When in dual operator mode, the 600 Ω output 1 has audio from the VHF band and guard only while the UHF audio will be on the 600 Ω output 2.
3.7.6 Audio Output Ground
Pin 10 is the ground for both the 4 and 600 Ω audio output signals.
3.7.7 Mic Signal Input
The microphone input signal is to be provided on pin 6, utilizing shielded wire with the shield grounded to pin 10. Microphone signal 2 is on pin 6 of the 9 pin D connector.
3.7.8 Memory Up/Memory Down
Remote scrolling through the 200 memory positions can be achieved by providing a ground to pins 4 (up) and 5 (down) through a momentary contact cyclic switch. The memories will scroll only on the band selected.
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3.7.9 Data Input
Data communications equipment requiring direct access to the modulator and discriminator and be connected via pins 2 and 11. Data cannot be transmitted in CANADA unless equipment is approved for use with the TFM-500 by the communications regulatory authority.
3.8 INTERNAL PROGRAMMING AND GUARD ENABLE/DISABLE JUMPER
Removing the internal enable/disable jumper strap from pins 1 and 2 of J10 can disable the programming and direct frequency entry modes. Removal of this jumper will prevent operation on any frequencies other than those programmed in the 400 memory positions and two guard receiver memory positions. The removal of the guard receiver programming enable/disable jumper strap from pins 1 and 2 of J11 will totally disable the operator’s ability to re-program the 2 guard receiver channels.
The transceiver is always shipped with the two jumpers in the entry enable positions. To place either of the jumpers in the disable position:
1. Remove the left side of the radio.
2. Set or remove jumpers as necessary.
3. Re-assemble the radio in the reverse order.
FIGURE 3.3
Microprocessor Control Unit (MCU) PCB Module:
Internal Enable/Disable Jumper Locations
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3.9 TRANSMITTER POWER ADJUSTMENTS
The transmitter power is adjusted to a maximum of 10 watts in high power mode and 1 watt in low power mode over the transceiver operating bandwidth at the factory. If transmitter RF power readjustment is required, perform as follows:
1. Select the band that you wish to adjust on the band select switch.
2. Connect an RF through-line wattmeter to the appropriate antenna connector. Set the operating frequency to 156.000 MHz for VHF or 457.000 MHz for UHF and key the transmitter.
3. In low power mode, set the low power adjustment potentiometer on the left side of the chassis to produce 1.0 watt of RF output power (See Figure 3-3).
4. In high power mode, set high power adjustment potentiometer on the left side of the chassis to produce 9.5 watts of RF output power.
5. Verify that the RF output power is between 9 and 10 watts on 138.000 MHz and 174.000
MHz for VHF or 403.000 MHz and 512.000 MHz for UHF.
3.10 TRANSMITTER MICROPHONE LEVEL ADJUSTMENT
1. Set the transceiver operating frequency to 156.000 MHz. Connect an appropriate test receiver to the RF output connector. Ensure that the output of the transceiver is terminated into a proper dummy load.
2. Key the transmitter and input a -10 dBm (0.25 VRMS), 1 kHz audio signal into the microphone input.
3. Adjust the microphone level potentiometer (Mic Level 1) through the access hole located on the right side of the chassis (see Figure 3-4) to produce a 2.7 kHz deviation.
4. Verify that the deviation is at least 2.3 kHz on the following frequencies: 138.000 MHz,
162.000 MHz and 174.000 MHz.
5. For UHF, perform the same procedure using the Mic Level 2 pot on the left side of the transceiver and use the following frequencies: 403.000 MHz, 457.000 MHz, and 512.000
MHz.
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FIGURE 3.4
External Adjustment Access Holes
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3.11 SQUELCH ADJUSTMENT
The squelch circuit is designed to open or close depending upon the noise content and not the strength of the received signal. Therefore, high squelch settings are not necessary or possible.
The squelch on both the VHF and UHF receivers is factory set to open at approximately 22 dB
SINAD, while the guard receiver is set to open at 25 dB SINAD. The range of adjustability is approximately 3 to 27 dB SINAD. This adjustment can be made or altered to suit local conditions as follows:
1. Set the receiver to 157.000 MHz for VHF or 457.000 MHz for UHF. Connect a signal generator to the antenna input of the desired band.
2. Set the signal generator to produce a ±3 kHz deviation with a 1 kHz tone on 157.000 MHz or
457.000 MHz. Increase the signal generator RF level from 0 uV until the squelch indicator
LED is on. Verify the squelch opens at the desired level.
3. If not, re-adjust receiver squelch potentiometer through the access hole located on the bottom or side of the transceiver chassis (see Figure 3-4).
3.12 TRANSMITTER DEVIATION ADJUSTMENT
VHF:
1. Remove the bottom cover of the transceiver.
2. Set the VHF operating frequency to 157.000 MHz and connect an appropriate test receiver to the RF output connector. Ensure that the output of the transceiver is terminated into a proper dummy load.
3. Key the transmitter and input a +10 dBm (2.5V RMS), 2.5 kHz audio signal into microphone input 1.
4. Adjust the wideband deviation limit potentiometer, R30 on the VHF Rx/Tx module (see Figure
3-5), to produce a ±4.25 kHz deviation. Select narrow band mode on the VHF band and adjust the narrowband deviation limit potentiometer, R76 on the VHF Rx/Tx module, to produce a ±2.15 kHz deviation.
5. Verify that the deviation does not exceed ±5 kHz for wideband and ±2.5 kHz for narrowband on 138.000 MHz and 174.000 MHz. Re-adjust R30 or R76 as required, if the deviation exceeds ±5 kHz or ±2.5 kHz, respectively.
6. Replace the bottom cover.
UHF:
1. Remove the top cover of the transceiver.
2. Unplug the white coax from the guard receiver and remove the front panel.
3. Remove the guard receiver tray.
4. Replace the front panel and select the UHF band.
5. Set the UHF operating frequency to 457.000 MHz and connect an appropriate test receiver to the RF output connector. Ensure that the output of the transceiver is terminated into a proper dummy load.
6. Key the transmitter and input a +10 dBm (2.5 VRMS), 2.5 kHz audio signal into microphone input 1 if in single mode or microphone input 2 if in dual mode.
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6. Adjust the wideband deviation limit potentiometer, R11 on the UHF Rx/Tx module (see Figure
3.6), to produce a ±4.25 kHz deviation. Select narrow band mode on the UHF band and adjust the narrowband deviation limit potentiometer, R102 on the UHF Rx/Tx module, to produce a ±2.15 kHz deviation.
7. Verify that the deviation does not exceed ±5 kHz for wideband and ±2.5 kHz for narrowband on 403.000 MHz and 512.000 MHz. Re-adjust R30 or R76 as required, if the deviation exceeds ±5 kHz or ±2.5 kHz, respectively.
8. Replace the bottom cover.
FIGURE 3.5
Deviation Adjustment Potentiometer Location
VHF Receiver/Transmitter PCB Module
NOTE: R30 is for 25 kHz (wideband) Deviation Adjustment
R76 is for 12.5 kHz (narrowband) Deviation Adjustment
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FIGURE 3-6 Deviation Adjustment Potentiometer Location
UHF Receiver/Transmitter PCB Module
NOTE: R11 is for 25 kHz (wideband) Deviation Adjustment
R102 is for 12.5 kHz (narrowband) Deviation Adjustment
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APPENDIX – TO “INSTALLATION INSTRUCTIONS”
POST INSTALLATION EMI TEST
PURPOSE
The purpose of this test is to identify any interference that the TFM-500 may cause with existing aircraft systems.
TEST CONDITIONS
The TFM-500 transceiver should be installed and function tested. The antenna VSWR should be checked. A forward/reverse power check with an in-line wattmeter should show no more than
10% reflected power. For the following tests, ensure that the power switch is in the high position.
METHODOLOGY
Most of the EMI tests can be accomplished on the ground. In some cases, flight testing is required or is easier. If the aircraft is approved for IFR operations, then it is mandatory that interference between the TFM-500 Airborne FM and the approach aids be checked in flight.
The GPS should be operational and navigating with at least the minimum compliment of satellites. The VHF Comm should be set to the frequencies indicated with the squelch open.
VOR/DME receivers should be set to the frequencies indicated and selected for display. If possible, set up a DME ramp test set on the frequencies indicated and adjust the output until the flags are out of view. The transponder and encoder should be monitored with ramp test equipment. Set the output of the transponder test set to 3db above the output necessary to achieve 90% reply. If possible set the ADF to a nearby navigation station.
Modulate the TFM-500 transmitter on the indicated frequencies for at least 20 seconds.
Observe the GPS for any degradation in satellite status or availability or flags. Listen for any noise or detected audio signals on the VHF Comm(s). Listen for any noise or detected audio signals on the VOR/LOC receiver audio; look for any moment of flags or needles on the
VOR/LOC/GS navigation display(s). Observe the transponder for any loss of reply or spurious reply.
List the power plant, fuel, and other electric instruments in the chart provided and note any anomalies that occur while transmitting. Then assess the results.
If the aircraft is equipped with an autopilot or a stability augmentation system, then test fly the aircraft and verify that operation of the TFM-500 transceiver does not have adverse effects on these systems. After checking for gross effects at a safe altitude, fly an approach with each of the different navigation systems coupled to the autopilot (ILS, GPS, ETC.) and look for any anomalies.
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RESULTS
If the installed system passes all of the applicable EMI tests, then no further action is required. If interference is observed then the interference must be assessed against the appropriate standards of airworthiness for the system in question. For example, it is permissible for a VFR certified GPS to lose navigation capability while the TFM-500 unit is transmitting, providing that it recovers properly and promptly, but it is not permissible for an IFR Approach certified GPS to be affected in the same way. A complete discussion of all the standards of airworthiness to be applied in assessing EMI effects is beyond the scope of this document.
PROCEDURE
A.
Operate the TFM-500 transmitter on the following frequency for at least 20 seconds. Observe the
GPS for any degradation in satellite status or availability or flags.
FREQUENCIES GPS #1 GPS #2
TFM-500 PASS FAIL PASS FAIL
143.1800 MHz
143.1825 MHz
157.5000 MHz
157.5425 MHz
512.0000 MHz
NOTES:
B.
Determine if the image frequency for the VHF Comm falls within the range of the TFM-500. If so, select a set of frequencies that will cause the TFM-500 to be set as close as possible to the image frequency. Any one of the many possible sets will suffice. Record those values in the spaces provided in the following chart. Modulate the TFM-500 transmitter on the following frequencies for at least 20 seconds. Listen for any noise or detected audio signals on the VHF comm.
Example - Bendix/King KY 196A:
The first IF frequency is 11.4 MHz. The L.O. is above the received frequency (high side injection); therefore, the image frequency is 22.8 MHz above the selected frequency. Set the KY 196A to
120.000 MHz and the TFM-500 to 142.8000 MHz.
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VHF #1
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FREQUENCIES
135.975
121.150
131.250
TFM-500
138.0
157.5
157.5
PASS
RESULTS
FAIL
Image:
NOTES:
VHF #1
FREQUENCIES
TFM-500
135.975
121.150
131.250
138.0
157.5
157.5
PASS
RESULTS
FAIL
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Determine if the image frequency for the VOR/ILS Nav falls within the range of the TFM-500. If so, select two sets of frequencies that will cause the TFM-500 to be set as close as possible to the image frequency. Chose one set in the localizer frequency range and the other in the VOR frequency range. Record those values in the spaces provided in the following chart. Modulate the
TFM-500 transmitter on the following frequencies for at least 20 seconds. Listen for any noise or detected audio signals on the receiver audio; look for any moment of flags or needles on the navigation display.
Image:
Image:
FREQUENCIES
VOR/ILS #1 TFM-500
108.000
108.100
162.0000
162.1500
PASS
RESULTS
FAIL
Image:
Image:
NOTES:
FREQUENCIES
VOR/ILS #2 TFM-500
108.000
108.100
162.0000
162.1500
PASS
RESULTS
FAIL
TFM-500 Installation & Operating Instructions
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TECHNISONIC INDUSTRIES LIMITED www.til.ca
108.10
108.15
108.30
108.35
108.50
108.55
108.70
108.75
108.90
108.95
109.10
109.15
109.30
109.35
109.50
109.55
109.70
109.75
109.90
109.95
The following procedure checks for second harmonic interference to the glide slope receiver from the TFM-500. All transceivers produce harmonics (multiples of the wanted frequency) and while the TFM-500 far exceeds FCC requirements, interference can still be experienced depending upon antenna position and separation. Furthermore, other equipment in the aircraft and the structure of the aircraft can generate harmonics where dissimilar metals make contact or where grounds are isolated, etc. This is also true of aircraft hangars; therefore, testing should be done outside away from any structures where possible.
With a portable glide slope generator, provide enough signal to firmly activate the indicator needle and hide all flags. Increase the signal level by 3 dB. Modulate the TFM-500 transmitter on the following frequencies for at least 20 seconds. Observe the Glide Slope displays. Look for any movement of flags or needles on the navigation display. If an interference condition is detected, then the installation will have to be flight tested according to the following procedure. Using the table below, determine the glide slope frequency based on the localizer frequency of the ILS to be used. Divide the glide slope frequency by 2 and program into the TFM-500. Fly the aircraft to intercept the localizer and glide slope (both needles centered) at 26 nm from the runway.
Transmit on the TFM-500 for 10 seconds and watch for any deflections or flags. Repeat the test every 2 nm until the indicators are not affected. If the distance is greater than 18 nm, then a pass shall be recorded. Otherwise, the TFM-500 shall be placarded “Do not transmit while on ILS approach.”
Localizer Glide slope Localizer Glide slope
334.70
334.55
334.10
333.95
329.90
329.75
330.50
330.35
329.30
329.15
331.40
331.25
332.00
331.85
332.60
332.35
333.20
333.05
333.80
333.65
110.10
110.15
110.30
110.35
110.50
110.55
110.70
110.75
110.90
110.95
111.10
111.15
111.30
111.35
111.50
111.55
111.70
111.75
111.90
111.95
334.40
334.25
335.00
334.85
329.60
329.45
330.20
330.05
330.80
330.65
331.70
331.55
332.30
332.15
332.90
332.75
333.50
333.35
331.10
330.95
TFM-500 Installation & Operating Instructions
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FREQUENCIES
VOR/ILS #1 TFM-500
334.7 (108.1) 167.3500
PASS
RESULTS
FAIL
FREQUENCIES
VOR/ILS #2 TFM-500
334.7 (108.1)
NOTES:
167.3500
PASS
RESULTS
FAIL
TFM-500 Installation & Operating Instructions
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TECHNISONIC INDUSTRIES LIMITED www.til.ca
Operate the TFM-500 transmitter on the following frequency for at least 20 seconds. Observe the
Transponder for any spurious replies or loss of reply to test set.
FREQUENCIES
TFM-500
512 MHz
TRANSPONDER #1
PASS FAIL
TRANSPONDER ##2
PASS FAIL
NOTES:
TFM-500 Installation & Operating Instructions
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TECHNISONIC INDUSTRIES LIMITED www.til.ca
Modulate the TFM-500 transmitter on the following frequencies for at least 20 seconds. Observe the DME displays. Look for loss of distance information on the display.
DME 1
FREQUENCIES
TFM-500
978 (108.0) 489
1020 (112.1) 510
PASS
RESULTS
FAIL
DME 2
FREQUENCIES
TFM-500
978 (108.0)
1020 (112.1)
489
510
PASS
RESULTS
FAIL
NOTES:
TFM-500 Installation & Operating Instructions
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NOTE:
For the following tests, select a frequency at the top, middle, and bottom of each band of the
TFM-500 transceiver.
138 to 174 MHz Band 403 to 512 MHz Band
Frequency #1
Frequency #2
Frequency #1
G.
At a safe altitude, engage the autopilot or stability augmentation system. Modulate the TFM-500 transmitter on the above frequencies for at least 20 seconds. Observe any effect on the autopilot or stability augmentation system.
Observations:
H.
Perform a coupled ILS approach to the aircraft's certified limits. Modulate the TFM-500 transmitter on the above frequencies for at least 20 seconds. Observe any effect on the autopilot.
Repeat for second flight director/autopilot if equipped.
Observations:
TFM-500 Installation & Operating Instructions
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List the power plant, fuel, and other electric instruments in the chart provided and note any I. anomalies that occur while transmitting. Assess the results.
STEP SYSTEM PASS FAIL NOTES
1
2
3
4
5
6
7
Com 1&2
(UHF 403-512 MHz Band)
Transponder & Encoder
(VHF 138-174 MHz Band)
ADF 1 & 2
VG
Glideslope 1&2
(UHF 403-512 MHz Band)
VOR/LOC 1&2
(UHF 403-512 MHz Band)
Directional Gyro
TFM-500 Installation & Operating Instructions
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STEP
8 Compass
SYSTEM
9 Fuel Pressure
10 Oil Temp
11 Amps
12 Bus Voltage
13 Fuel %
14 Nt
TECHNISONIC INDUSTRIES LIMITED www.til.ca
PASS FAIL NOTES
TFM-500 Installation & Operating Instructions
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STEP
15 TOT
SYSTEM
16 Torque %
17 Annunciators
18 Digital Clock
19 Oil Pressure
20 Annunciators
TECHNISONIC INDUSTRIES LIMITED www.til.ca
PASS FAIL
21 GPS
22 DME
NOTES
TFM-500 Installation & Operating Instructions
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STEP
NOTES:
SYSTEM
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PASS FAIL NOTES
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Technisonic Industries Limited
240 Traders Blvd., Mississauga, ON Canada L4Z 1W7
Tel: (905) 890-2113 Fax: (905) 890-5338
IMPORTANT
WARRANTY
All communication equipment manufactured by Technisonic Industries Limited is warranted to be free of defects in Material or Workmanship under normal use for a period of one year from Date of Purchase by the end user.
Warranty will only apply to equipment installed by a factory approved and/or authorized facility in accordance with Technisonic published installation instructions. Equipment falling under the following is not covered by warranty:
• Equipment that has been repaired or altered in any way as to affect performance
• Equipment that has been subject to improper installation
• Equipment that has been used for purposes other than intended
• Equipment that has been involved in any accident, fire, flood, immersion, or subject to any other abuse.
Expressly excluded from this warranty are changes or charges relating to the removal and re-installation of equipment from the aircraft. Technisonic will repair or replace (at
Technisonic's discretion) any defective transceiver (or part thereof) found to be faulty during the Warranty Period.
Faulty equipment must be returned to Technisonic (or its authorized Warranty Depot) with transportation charges prepaid. Repaired (or replacement) equipment will be returned to the customer with collect freight charges. If the failure of a transceiver occurs within the first 30 days of service, Technisonic will return the repaired or replacement equipment prepaid.
Technisonic reserves the right to make changes in design, or additions to, or improvements in its products without obligation to install such additions and improvements in equipment previously manufactured. This Warranty is in lieu of any and all other warranties express or implied, including any warranty of merchantability or fitness, and of all other obligations or liabilities on the part of Technisonic.
This Warranty shall not be transferable or assignable to any other persons, firms, or corporations.
For warranty registration, please complete the on-line
Warranty Registration Form found at www.til.ca.
MODEL TFM-500
Airborne VHF/ UHF FM Transceiver
Technisonic VHF/UHF FM Airborne Transceiver
The Technisonic TFM-500 airborne VHF/UHF FM transceiver utilizes state of the art frequency synthesis techniques to provide FM communications on every currently available channel within the General Radio Service VHF/FM High
Band and UHF/FM Band. The VHF module covers from 138 to 174 MHz in 2.5 KHz increments while the UHF module covers from 403 to 512 MHz also in 2.5 KHz steps. Operating frequencies and other related data are presented on a 96 character, four line LED matrix display, which is available in either red or green. The TFM-500 can be installed as a single transceiver operating in VHF or UHF mode through a single audio controller FM input, or can be installed as FM1 and FM2 enabling simultaneous operation on both bands. Additionally, this transceiver can operate as a cross band repeater. The cross band function is front panel controlled and requires only 2 key stokes to enable or disable. All data entry and control commands are entered via an enhanced 12 button keypad conveniently situated on the face panel.
The TFM-500 can be operated in the Direct Entry or Simplex mode by simply keying in the desired operating frequency. It can also function without restriction on any split frequency pair within either band. This unit features
400 preset memory positions (200 VHF and 200 UHF) each capable of storing a receive frequency, a transmit frequency, a separate CTCSS tone for each receive and transmit frequency, an alpha numeric identifier for each channel and a DPL or DCS coded squelch identifier for each channel. The TFM-500 provides for either 25 kHz wide band or 12.5 kHz narrow band operation on any or all of it’s 400 preset channels. An upload/download function allows the operator to download channel information from a PC, or upload stored data from the transceiver to a PC.
Supporting software is supplied with each unit. Information stored in the transceiver’s memory is available for instant recall by keypad entry, or by pressing the UP or DOWN buttons which allows an operator to scroll through all preset channels. The TFM-500 transceiver features a synthesized two channel VHF or UHF guard receiver, a DTMF encoder for signaling during transmit, and a scan function which will scan any or all of the frequencies stored in up to five scan lists. A remote control head is offered (RC-500) which provides for slaved operation of the main transceiver from a remote location, allowing for a second position in the aircraft to exercise frequency control. Both
UHF and VHF operating frequency as well as Guard selection and operating frequency can be controlled from the
“remote” position. Active frequency is displayed on both remote and local displays.
The TFM-500 transceiver is panel mounted (Dzus) and completely self contained in a 8.0 x 3.75 x 5.75 inch chassis weighing just 4.7 pounds. Front panel controls are UHF for UHF main channel volume; VHF for VHF main channel volume, GUARD for guard channel volume; a UHF/VHF Band transmit select switch, a MN/GD switch for main or guard transmitter selection; a G1/G2 switch for guard 1 or guard 2 receive and transmit select; and a HI/LO switch for control of transmitter power output. Hi power is 10 Watts output, low power is 1 Watt output. This transceiver offers 28 volt DC backlighting as standard, (5 Volt AC as an option) which is controlled by the aircraft dimmer bus.
Display brightness is controlled from the front panel keypad. The “remote control” function is via a separate 9 pin
Cannon D submin connector located on the rear panel of the TFM-500 transceiver. External access for mic gain and sidetone level adjust provide for easy installation and setup for optimum performance. The small size and light weight (4.7 lbs., 2.2 Kg) of the TFM-500 Dual Band transceiver makes this radio ideally suited to helicopter installations. Technisonic FM radios are compliant with RTCA DO-160C categories relating to Vibration,
Overpressure, Humidity, Temperature and Altitude, Magnetic Effect, Power Input, Voltage Spike, Decompression, and RF Emission (including DO-160C, Section 21, Category Z).
TFM-500 General Specifications
VHF Module UHF Module
Frequency Range
Tuning increments
Operating Mode
Channel spacing
Memory positions
Dimensions
Weight
Temperature range
Altitude
Power requirement
Certification
RTCA DO-160C Env Cat
Guard receiver
CTCSS squelch capability
DPL/DCS capability
DTMF encoder
Audio output
Speaker output
Back lighting
Display
138.000 MHz to 174.000 Mhz
2.5 KHz
F3E simplex or semi-duplex
12.5 KHz, 25 KHz or 30 KHz as per applicable FCC and DOC spec.
200 channels
(Overall TFM-500 dual band transceiver)
4.7 Lbs (2.2 Kg) total
-45 o
C to +70
0
C
50,000 ft
28 VDC
Receive - 600 mA
1 Watt transmit - 1.3 amps
10 Watts transmit - 2 amps
FCC and DOC Type approved
(B2,D1)XXX(B,M,N)XXXXXXABBXXXZXXX
2 channel synthesized encodes/decodes all 64 available tones
All available digital squelch codes
All standard DTMF tones supported
500 mW into 600 Ohms
2.5 Watts into 4 ohms
28V (standard) or 5V (specify)
Green (standard), red (optional)
403.000 MHz to 512.000 Mhz
2.5 KHz
F3E simplex or semi-duplex
12.5 KHz, 20 KHz or 25 KHz as per
Applicable FCC and DOC spec
200 channels
Approx 8.0 in x 3.75 in x 5.75 in
-45 o
C to +70
0
C
50,000 ft.
28 VDC
Receive - 700 mA
1 Watt transmit - 1.3 amps
10 Watts transmit - 2.0 amps
FCC and DOC Type approved encodes/decodes all 64 available tones encodes/decodes all avail digital sq codes
All standard DTMF tones supported
500 mW into 600 Ohms
2.5 Watts into 4 ohms
28V (standard) or 5V (specify)
Green (standard), red (optional)
Minimum Performance Specifications
Main receiver
Sensitivity at 12 dB SINAD
Adjacent channel
Spurious attenuation
Third order intermod
Image attenuation
FM acceptance
Hum and noise
Audio distortion
Ant conducted emission
Better than 0.35 microvolts
-78 dB for 25 KHZ, -70 FOR 12.5 KHz
-90 dB
-70 dB
-80 dB
+ 6 Khz
Better than 50 dB
Less than 5%
Less than -70 dBm
Guard receiver
2 channel VHF Guard. All specifications identical to main VHF receiver.
Transmitter
RF power output
Output impedance
Maximum deviation
Spurious attenuation
Frequency stability
Microphone circuit
Sidetone output
Harmonic attenuation
FM hum and noise
Audio input
Audio distortion
1 Watt or 10 Watts
50 Ohms
Limited to 2.5 KHz for 12.5 KHz channels and 5 Khz for 25 KHz & 30 KHz channels
-90 dB below carrier level
+0.0005%
Carbon or equivalent
500 mw (max) into 600 ohms
-65 dB below carrier level
-40 dB
50 mV at 2.5 KHz into 200 ohm circuit for +3.5 KHz deviation, (25 Khz mode).
50 mV AT 2.5 kHz into 200 ohm circuit for
+2.0 Khz (12.5 KHz mode), adjustable
Less than 5%
Note: Specifications are subject to change without notice
DPL is a trademark of Motorola Corporation
Better than 0.35 microvolts
-70 dB for 25 Khz, -70 dB for 12.5 Khz
-90 dB
-70 dB
-70 dB
+ 6 Khz
Better than 40 dB
Less than 5%
Less than -70 dBm
1 Watt or 10 Watts
50 Ohms
Limited to 2.5 KHz for 12.5 KHz channels and 5 KHz for 25 KHz channels
- 90 dB below carrier level
+0.00025%
Carbon or equivalent
500 mw (max) into 600 ohms
-65 dB below carrier level
-40 dB
50 mV at 2.5 KHz into 200 ohm circuit for
+3.5 Khz deviation (25 KHz mode).
50 mV AT 2.5 kHz into 200 ohm circuit for
+2.0 Khz (12.5 KHz mode), adjustable
Less than 5 %
Technisonic Industries Ltd
.
2 4o Traders Blvd , Mississauga, Ontario L4Z 1 W7 Canada
Ph: 905 890-2113 Fax: 905 890-5338 www.til.ca
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