Technisonic TFM -138 Airborne VHF/FM Transceiver Installation and Operating Instructions

VHF/FM

AIRBORNE TRANSCEIVER

MODEL TFM-138

(

s/n’s 1540 and up with F10-B Software

)

Installation and

Operating Instructions

Til Document No.

98RE229

Rev. A

Issue 1

SEPTEMBER 2002

Technisonic Industries Limited

240 Traders Boulevard, Mississauga, Ontario L4Z 1W7

Tel:(905)890-2113 Fax:(905)890-5338 web site: www.til.ca

CAUTION

This unit contains static sensitive devices. Wear a grounded wrist strap and/or conductive gloves when handling printed circuit boards.

NOTE: 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 own expense.

Warning:

Changes or modifications not expressly approved by Technisonic Industries could void the user’s authority to operate the equipment.

WARRANTY INFORMATION

The Model TFM-138, VHF/FM Transceiver is 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

Amherst, NY

Tel:(716) 691-0669

A Page

Summary of DO-160C Environmental Testing for Technisonic Model TFM-138, VHF Transceiver

Conditions

Temperature and Altitude

Vibration

Magnetic Effect

Power Input

Voltage Spike

RF Emission

Section

4

8

15

16

17

21

Description of Conducted Tests

Equipment tested to categories B2 and D1.

Equipment is tested without shock mounts to categories B, M and N.

Equipment is class Z.

Equipment tested to category B.

Equipment tested to category B.

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 factory authorized 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.

B page

Paragraph

SECTION 1

1.1

1.2

1.3

1.4

1.5

TABLE OF CONTENTS

Title Page

GENERAL DESCRIPTION

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Purpose of Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Model Variation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Technical Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

SECTION 2

2.7

2.8

2.9

2.10

2.11

2.12

2.13

2.14

2.1

2.2

2.3

2.4

2.5

2.6

SECTION 3

3.7.2

3.7.3

3.7.4

3.7.5

3.7.6

3.7.7

3.7.8

3.1

3.2

3.3

3.4

3.5

3.6

3.7

3.7.1

3.7.9

3.8

3.9

3.10

3.11

3.12

3.13

3.14

OPERATING INSTRUCTIONS

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Programming Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Scanning Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Priority and Selective Memory Channel Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Direct Frequency Entry Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Receive Frequency Simplex Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Keyboard Lockout Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Variable Frequency Mode Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

LED Display Variable Dimming Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

90 Second Transmitter Time Out Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Quick Guard Programming Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Programming CTCSS Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

PC Memory/Programming Download Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Main Power +28VDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Main Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

PTT (Ground Keying) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Internal Programming Enable/Disable Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Transmitter Power Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Transmitter Microphone Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Transmitter Sidetone Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Main and Guard Squelch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Transmitter Deviation Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Guard Receiver Audio Limit Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 i

INSTALLATION INSTRUCTIONS - APPENDIX

Post Installation EMI Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Table No.

LIST OF TABLES

Title Page

3-1 15-Pin D Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

LIST OF ILLUSTRATIONS

Figure No.

2-1

2-2

3-1

3-2

3-3

3-4

3-5

Title Page

Operator's Switches and Controls - TFM-138 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

TFM-138 Transceiver PC Download Cable - Wiring Diagram . . . . . . . . . . . . . . . . . . . . . 2-8

Outline Drawing for TFM-138 Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Wiring Connections for TFM-138 Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Interal Enable/Disable Jumper and TX High/Low Power Adjust Locations . . . . . . . . . . . 3-6

Microphone and Sidetone Level, Main and Guard Squelch Adjustment Access . . . . . . 3-8

Deviation Adjustment Potentiometer Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10 ii

TFM-138

SOFTWARE CHANGE NOTE

This document covers operation of the Technisonic TFM-138, s/n 1540 and onwards which have been delivered from the factory with version F10-B software capable of wide/narrow band operation. For TFM-138’s with s/n 1539 or less, TiL Document 95RE177 should be referred to.

This document does not cover the operation of older version TFM-138’s with s/n 1539 or less.

iii

SECTION 1

GENERAL DESCRIPTION

1.1 INTRODUCTION

This publication provides operating and installation information on the TFM-138 (with version F10-B software), Transceiver manufactured by Technisonic Industries Ltd. The version F10-B software is factory installed in TFM-138's with s/n F1540 and onwards. 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-138 transceiver is used in CANADA, operation is restricted to the following sub bands: 138-144, 148-148.99, 149.005-150.005 and 150.05-174 MHz.

1.2

1.3

1.4

DESCRIPTION

The TFM-138, Transceiver is a frequency agile, fully synthesized airborne transceiver capable of operating in the 138.000 MHz to 174.000 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 the band and also incorporates a two channel synthesized guard receiver.

The TFM-138 Transceiver provides 100 operator accessible memory positions, each of which is capable of storing a transmit frequency, receive frequency, transmit frequency CTCSS tone, receive frequency CTCSS tone, an alphanumeric identifier for each channel and (in the TFM-138 s/n 1540 and up only) wideband (25 kHz) or narrowband (12.5 kHz) channel spacing assignment.

Operating frequency and other related data are presented on a 48 character, two 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 PC computer with the provided software and optional PIB-100 programming interface box or via an older computer and PC Up/download cable, P/N 943165-4.

PURPOSE OF EQUIPMENT

The TFM-138, VHF/FM Transceiver is designed to provide secondary airborne communications to facilitate operations which are typically performed in a low altitude environment. The transmitter section of this unit has a minimum of 8 watts and does 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.

MODEL VARIATION

There are four variations of the Model TFM-138 Transceiver. All units offer identical features and performance except for the following differences:

TFM-138, P/N 921012-1

TFM-138, P/N 921012-1 (5V)

TFM-138, P/N 921012-2

TFM-138, P/N 921012-2 (5V)

GREEN display and 28 Volt back lighting.

GREEN display and 5 Volt back lighting.

RED display and 28 Volt back lighting.

RED display and 5 Volt back lighting.

Both P/N's 921012-1 and 921012-2 are always provided with 28 Volt back lighting unless a specific request is made for 5 Volt AC operation.

1-1

1.5

TECHNICAL CHARACTERISTICS

Specification

GENERAL

Model Designation:

Frequency Range:

Tuning Increments:

Operating Mode:

Channel Spacing:

Physical Dimensions (including heatsink):

Weight:

Mounting:

Operating Temperature Range:

Power Requirement:

Voltage:

Current:

Frequency Selection:

Guard Receiver:

CTCSS squelch/encoder:

DPL digital squelch/encoder:

DTMF encoder:

Audio Output:

Speaker Output:

Back Lighting:

Display Colour:

DPL is a trademark of Motorola Corporation

1-2

Characteristic

TFM-138, s/n 1540 and up

138.000 to 174.000 MHz

2.5 kHz

F3E simplex or semi-duplex

25 or 12.5 kHz

Approx. 8.0" X 3.0" X 5.75"

Approx. 3.1 Lbs (1.4 Kg)

Panel Mount via Dzus fastners

-45 E C to +70 E C

28.0 Vdc, ± 15%

Receive - 0.7 A Max.

1 Watt Transmit - 1.3 A Max.

8-10 Watt Transmit - 2.0 A Max.

100 memories programmed with: a) Tx Frequency/Rx Frequency b) Tx/Rx CTCSS tone c) 9 character alpha numeric title

2 channels programmed with: a) Tx Frequency/Rx Frequency b) Tx CTCSS tone c) 9 character alpha numeric title

All CTCSS tones available

(Not available in TFM-138)

All standard DTMF tones

0.5 Watts into 600 ohms

2.5 Watts min. into 4 ohms

28 Volts (standard) or

5 Volts (specify)

Green (standard) or

Red (specify)

1.5

TECHNICAL CHARACTERISTICS (continued)

MAIN 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

GUARD RECEIVER

All specifications identical to main receiver

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

1-3

Better than 0.35 µV

-70 dB (25 or 12.5 kHz)

-90 dB

-70 dB

-80 dB

± 6 kHz

Better than 50 dB less than 5% less than -70 dBm

1 watt or 10 watts

50 ohms

±5 kHz (25 kHz mode)

±2.5 kHz(12.5kHz mode)

-90 dB below carrier level

± 0.0005%

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, adjst.

Less than 5%

2.1

2.2

5.

6.

7.

3.

4.

SECTION 2

OPERATING INSTRUCTIONS

OPERATING FEATURES

The equipment has several important operating features which provide maximum flexibility, performance and versatility. These features are outlined below. New features provided in TFM-

138 units of s/n 1540 and up with F10-B software are indicated by an “*”.

1.

100 memory positions* which can each be programmed with a transmit and receive frequency with 25 or 12.5 kHz channel spacing*, Tx/Rx CTCSS tones and a 9-character alphanumeric title.

2.

2 guard channels which can each be programmed with a Rx frequency with 25 or 12.5

kHz channel spacing*, CTCSS Tx tone and a 9-character alphanumeric title.

Scanning of preprogrammed memories with selective memory scanning*.

Priority scan of memory channel 1, if desired.

Direct frequency entry mode.

Receive frequency simplex function.

Switchable RF output power between 1 watt and 8-10 watts.

11.

12.

13.

8.

9.

10.

Lockout of keyboard to prevent inadvertent entries.

Variable frequency mode to manually scan up and down in 2.5 kHz steps.

LED display variable dimming mode.

Selectable 90 second Tx time out feature.

Quick download* of any of the 100 memory positions to the guard memories.

PC Memory download capability. (Does not upload memories from the transceiver).

2.

3.

4.

OPERATING INSTRUCTIONS (See Figure 2-1)

1.

Switch power on by turning the main volume clockwise. The last programmed frequencies will be displayed. The transceiver is now in normal operating mode.

Adjust the audio level by adjusting the main and guard volume knobs.

Pressing the squelch defeat button will open both receivers to confirm they work.

The top display line will indicate which memory is selected followed by a "+" if the memory position is in the scan list, an alphanumeric message, and the frequency of the main 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 is programmed, or an "RX" if no Receive tone is programmed. Similarly, in the transmit mode either a "TT" or "TX" is shown after the frequency. The bottom line indicates similar information about the guard receiver.

2-1

FIGURE 2-1 Operator's Switches and Controls - TFM-138, (F10-B software)

2-2

2.3

6.

7.

8.

9.

5.

10.

Only TX CTCSS tones may be programmed for the guard receiver. At the beginning of each line, an LED indicates open squelch.

Set the MN/GD switch to main or guard transmit frequency.

Set the G1/G2 switch to the desired guard channel.

Set the HI/LO switch to the desired RF output power.

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.

To transmit DTMF tones, use the keyboard keys while holding the PTT button on the microphone. 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 the top and bottom line indicates which receiver is receiving. The display also indicates which memory channel is in use and which guard channel is in use.

A "TX" (no TX CTCSS toneprogrammed) or "TT" (TX CTCSS tone programmed) on the right side of the display indicates whether the guard or main channel 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 CTCSS tone is programmed and “RT” if a CTCSS tone is programmed.

When the transceiver is in either of the operating frequency or CTCSS tone 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.

1.

2.

PROGRAMMING INSTRUCTIONS

To program one of the 100 memory channels in the TFM-138:

Press the FUNC key. The display will show the function prompt.

3.

4.

5.

Press the PROG key. The display will show the current receive frequency with a flashing curser on the second digit (The first digit is always a one <1>).

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.

The curser will return to the second digit. You can now retype the frequency if you made an error or press ENTER to continue.

The transmit frequency will be displayed with the curser on the second digit. Follow the same method as in step 3 and 4.

6.

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, then press ENTER .

2-3

2.4

7.

8.

9.

The alpha-numeric 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.

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 the scan list or lock it out of the scan list. Use the M.UP

and M.DN

keys to toggle between these functions (for details see paragraph 2.5). Once the desired condition has been selected, press ENTER . TheTFM-

138 display will now show a "+" beside the memory channel number if scan is enabled.

The display will now show the current memory number. Type in the 3-digit number of the memory you want to save to (if different from displayed one) and press ENTER .1 or 2 digit memory numbers must be entered as 3-digits with zeroes preceding them.

10.

11.

12.

You now have the option to program the guard frequencies by pressing FUNC or press

ENTER to return to normal operating mode.

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.

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. If the guard is to be programmed for 12.5 kHz narrowband operation, use the QUICK GUARD

PROGRAMMING FEATURE described in paragraph 2.12. A memory position must be programmed to the 12.5 kHz mode then the contents can be quickly downloaded to GD1 or GD2 memory positions.

Programming of memory is disabled when the internal entry disable jumper is set. Alternatively any transceiver can be programmed by an IBM PC or compatible computer. See section 2.14 PC

Memory/Programming Download Capability.

SCANNING FUNCTION (5 second talkback delay)

1.

To start scanning of the memory channels, press FUNC then SCAN .

The radio will scan through all the preset memory positions (see next 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.

Therefore if while scanning, you hear a call for you:

1.

2.

Respond to the call within 5 seconds. When scanning is interrupted by an incoming signal, the channel will remain open for five seconds before resuming scanning.

During communications the five second timer is reset from the last Rx or Tx signal experienced.

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.

2-4

2.5

2.6

2.7

2.8

2.9

PRIORITY AND SELECTIVE MEMORY CHANNEL SCANNING

The priority memory channel is always memory position number 1. The priority memory channel is scanned every other step (ie. 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 100 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 M.UP

or M.DN

keys to toggle to the desired condition and press ENTER . In normal operating mode the display of the TFM-138 will later show a "+" beside the memory channel number if scan is enabled.

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 ie/ 153.275.

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 are required they must be programmed on.

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. ie/ If you are transmitting on 152.000 MHz and receiving 152.555 MHz, 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 quickly done by pressing M.UP

for one step up, then back down one step with the M.DN

key.

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 then LOCK . This will disable all keyboard functions (except keyboard unlock) in the receive mode. The DTMF function during transmit will not be affected. To unlock the keyboard, press and hold the LOCK key for two seconds until the display indicates "UNLOCK".

VARIABLE FREQUENCY MODE FUNCTION

To enter variable frequency mode, press RCL , 0 , 0 , 0 , then ENTER . 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 make the frequency count up or down in steps of 2.5

kHz. The M.UP

and M.DN

keys will make the frequency count up or down in steps of 1 MHz. You can not change the label. The frequency in this mode can not be stored in memory. To exit this mode, recall one of the 100 memory channels (ie. RCL , 0,0 , 1 ). Variable frequency mode is disabled when the internal entry disable jumper is set.

2-5

2.10

LED DISPLAY VARIABLE DIMMING MODE

1.

With the transceiver in normal operating mode press the decrease the intensity of the LED display.

UP or DN keys to increase or

2.

Once maximum intensity of the display is acheived, the UP key no longer functions.

Conversely once minimum intensity is reached, the DN key ceases to function.

2.11

90 SECOND TRANSMITTER TIME OUT 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. The timer is reset by releasing then re-engaging the PTT switch.

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 100 memory positions to 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.

2.13

PROGRAMMING CTCSS TONES

NOTE : The TFM-138 supports only CTCSS tone functions. DPL code functions are not supported.

CTCSS tones (PL tones) can be assigned to each memory channel. The guard receiver squelch will operate only on carrier detection, but guard 1 and 2 transmit tones can be programmed. To program a CTCSS tone to a memory channel:

1.

2.

Use the M.UP

and M.DN

keys to select the memory channel that you want to assign a CTCSS tone.

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.

3.

Use the M.UP and M.DN

keys to select the tone number you require. The following is a list of the available CTCSS tones:

Number Tone

01 67.0

02 71.9

03 74.4

04 77.0

05 79.7

Number Tone

26 162.2

27 167.9

28 173.8

29 179.9

30 186.2

Number Tone

51 177.3*

52 183.5*

53 189.9*

54 196.6*

55 199.5*

2-6

2.13

PROGRAMMING CTCSS TONES/DPL CODES - continued

06 82.5

07 85.4

08 88.5

09 91.5

10 94.8

31 192.8

32 203.5

33 33.0*

34 35.4*

35 36.6*

11 97.4

12 100.0

13 103.5

14 107.2

15 110.9

16 114.8

17 118.8

18 123.0

19 127.3

20 131.8

21 136.5

22 141.3

23 146.2

24 151.4

25 156.7

36 37.9*

37 39.6*

38 44.4*

39 47.5*

40 49.2*

41 51.2*

42 53.0*

43 54.9*

44 56.8*

45 58.8*

46 63.0*

47 69.4*

48 159.8*

49 165.5*

50 171.3*

56 206.5*

57 210.7*

58 218.1*

59 225.7*

60 229.1*

61 233.6*

62 241.8*

63 250.3*

64 No Tone

(carrier squelch only)

(The tones marked with * are

nonstandard tones).

4.

5.

Press ENTER. "TX TONE" appears on the display. Repeat step 3.

Press ENTER. "G1 TONE" appears on the display. Repeat step 3.

6.

Press ENTER. "G2 TONE" appears on the display. Repeat step 3 and press ENTER.

CTCSS tone programming of the TFM-138 is now complete.

2.14

PC MEMORY PROGRAMMING UP/DOWNLOAD CAPABILITY

The Technisonic Data Programmer (Multi-TDP) Windows based software is supplied on a CD with the TFM-138 transceiver or is available for download from our web site www.til.ca.

This software will allow anyone with a standard personal computer (PC) and the PIB-100 programming box to send or retrieve data from a connected TFM-138 transceiver for editing, sorting and sharing with other Technisonic transceivers.

The Multi-TDP programmers are 32 bit Windows applications that will work under Windows

95, Windows 98, Windows NT 4.0 and Windows 2000. Documentation for each of the respective programmers is available from the pull down "Help" menu at the top of the programmer display. To use the Windows based program with the TFM-138, a PIB-100 programming interface box, P/N 001108-1must be purchased from Technisonic or other reseller.

The CD supplied with the transceiver also contains a DOS based download program that can be used with the TFM-138 and no interface box. However changes in operating systems and

PC hardware that have occurred since the release of our DOS compatible software, prevent it from working with most modern computers. Computers with 486

2-7

processors or some early Pentium type processors of 200 MHz or less running MS DOS seem to work the best. Please check the “Programmer downloads” link on our web site www.til.ca

for further information regarding PC programming information for users of single band transceivers like the TFM-138.

Please note that the TFM-138 and not the TFM-138B must be selected in the Multi-TDP software package. See paragraph 2.14.4, item 8 below.

The user instructions for the Windows based Multi-TDP software and then the DOS based software follow below:

2.14.1 Windows Program Requirements:

1. PC compatible computer running Windows 95/98/NT/2000/ME. CD ROM drive and an available serial port.

2.

3.

Bench power supply of 28 volts DC.

PIB-100 Programming Interface Box (p/n 001108-1) - use cables that are provided with the PIB-100 programming interface box. Do not use cable p/n 943165-4 which is for use with the DOS program only.

2.14.2 Windows Program Installation:

3.

4.

1.

2.

Insert the CD into the drive.

Open the CD with windows explorer.

Open the MultiTDP directory and double click the MultiTDP_Install.exe

file.

Follow on screen instructions.

2.14.3 Connections:

1. Follow the connection instructions supplied with the PIB-100.

2. Do not turn on the 28 volt power supply until all connections have been made.

2.14.4 Running the Windows Program:

1. On the computer, click the Start menu button.

2. Select from the Start menu.

1.

2.

3.

4.

5.

6.

Select

Select

Technisonic

MultiTDP .

from the Programs menu.

The program will start. The MultiTDP program is used for almost all of Technisonic’s transceivers, therefore it has to be set up specifically for your TFM-138.

Pull down the File menu and click Select Radio .

Click the TFM-30/138/138B/403 line.

The display will configure itself for the PIB-100. Click the dot beneath TFM-138 .

2-8

7.

8.

Pull down the Com Port menu and select the com port that you have connected the PIB-

100.

The software is now ready to use. To get a full instruction manual, pull down the Help menu and select Documentation in PDF format .

2.14.5 Helpful Hints:

When uploading or downloading, a message box will appear asking you to press FUNC and then

7 on the radio. Press these keys before clicking the OK button in the message box.

2.14.6 DOS Program Requirements:

1.

2.

PC compatible computer with:

C

C

C

C

C

200 MHz or less

486 or early Pentium one processor

Printer port (LPT1)

CD drive - If not, you can copy the software on another computer to a floppy disk.

Colour monitor is preferred as some of the text is colour coded.

Bench power supply of 28 volts DC.

3.

PC Download cable (p/n 943165-4) see figure 2-2.

2.14.7 DOS Program Installation:

1.

2.

3.

Insert the CD into the drive.

Create a directory on your hard drive called \TIL.

Copy everything from the \PCDLN directory on the CD to the \TIL directory on the hard drive.

2.14.8 Connections:

1. Connect the PC download cable (p/n 943165-4) to the radio.

2. Connect the other end of the cable to the printer port on the computer

3.

Connect the red and black leads to the power supply.

2.14.9 Running the DOS Program:

1.

2.

3.

Turn on the 28 volt power supply.

Turn on the radio. The channels on the radio may start scrolling - this is normal.

Change to the \TIL directory and type PCDLN and enter. The radio should stop scrolling.

Do not use older DOS software (\PCDL) for TFM-138’s that have F10 firmware (s/n 1539 and less that have 25 memories). It is not compatible with DOS download software for

TFM-138’s with F10B firmware. Your frequency information will become corrupted as it is downloaded to a TFM-138 with F10B firmware. Similarly do not use DOS download software designed for the TFM-138B which includes /PCDLB and /PCDLB2. It is not compatible with the F10B firmware in the TFM-138.

2-9

4.

5.

Follow the menus to edit channels, print channel list, up or download as desired.

The data file is continuously updated as each change is made, so you don’t have to save the file at any time. To have multiple data files, you will have to copy the data file to another name and then copy it back when needed. There always has to be a data file called “DATA" or the program will not work.

2.14.10 Helpful Hints:

* Be sure to never plug in the radio while the power supply is on or damage may occur to your printer port.

C

C

You can only use LPT1 as the printer port. Make sure it is enabled in the BIOS.

The program works best on older, slower computers but has worked on some new PCs running DOS. A good way to try this out is to make a DOS bootable floppy with the software on it running the software from the A: drive.

2-10

TFM-138 Upload/Download Programming Cable For DOS Program

P/N 943165-4 - Wiring Diagram

FIGURE 2-2 TFM-138 Transceiver PC Download Cable - wiring diagram

(for DOS program only)

2-11

3.1

3.2

3.3

3.4

3.5

3.6

SECTION 3

INSTALLATION INSTRUCTIONS

GENERAL

This section contains information and instructions for the correct installation of the TFM-138,

VHF/FM Transceiver.

Make certain that the correct frequencies are preprogrammed in accordance with the equipment user's valid FCC operator's license, prior to installation.

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.

TRANSCEIVER INSTALLATION

The TFM-138 Transceiver is designed to be Dzus mounted and should be installed in conjunction with a IN-150 installation kit. See Figure 3-1 for an outline drawing of the unit with dimensions to facilitate the installation.

INSTALLATION KIT - CONTENTS

The IN-150 installation kit consists of:

1.

One 15 pin Cannon D mating connector (female) complete with crimp pins and hood.

2.

One BNC antenna mating RF connector (male) and hood.

ANTENNA INSTALLATION

Antenna, P/N ATM-150 may be obtained from Technisonic Industries Limited or a suitable equivalent may be utilized with the TFM-138 Series transceivers. The antenna should be mounted on the bottom of the aircraft whenever possible. Consult with instructions provided with the antenna. Connect RF cable from antenna to the back of the TFM-138 Series unit by utilizing the BNC mating connector provided in the installation kit.

INSTALLATION - PIN LOCATIONS AND CONNECTIONS

The pin numbers and locations for the 15 pin Cannon D located on the rear of the TFM-138 transceiver are shown below. Pin connections are in provided in TABLE 3-1.

Transceiver mounted view of 15 pin connector

3-1

FIGURE 3-1 Outline Drawing for Model TFM-138 Transceiver

3-2

3.6INSTALLATION - PIN LOCATIONS AND CONNECTIONS (continued)

10

11

12

8

9

13

14

15

Pin #

1

2

3

6

7

4

5

TFM-138 Transceiver

15-Pin D Connections

Description

600 Ohm Output

Data Output

Panel Lighting (28VDC or 5VAC)

Memory UP/PC Download Input

Memory Down/PC Download Input

Mic Signal Input

Main Power +28VDC

Main Ground

4 ohm Speaker Output

4 ohm/600 ohm Output Ground

Data Input

PC Download Input

PTT (Ground Keying)

Main Power +28VDC

Main Ground

3.7

TABLE 3-1

WIRING INSTRUCTIONS

Figure 3-2 shows all required connections and recommended wire sizes for the TFM-138

Transceiver.

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 for the transceiver 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 receive mode, and grounded during transmit mode.

3-3

Figure 3-2 Wiring Connections for TFM-138 Transceiver

3-4

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 0hms)

The audio output from pin 9 can be used to drive a 4 ohm speaker up to 2.5 watts. Audio output from pin 1 is 600 ohms, 0.5 watts maximum.

3.7.6

Audio Output Ground

Pin 10 is the ground for both the 4 ohm and 600 ohm audio output signals on pins 9 and 1.

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.

3.7.8

Memory Up/Memory Down

3.7.9

Data Input

Data communications equipment requiring direct access to the modulator and discriminator can be connected via pins 2 and 11. Data cannot be transmitted in CANADA unless equipment is approved for use with the TFM-138 unit by the communications regulatory authority.

3.8

Remote scrolling through the 100 memory positions can be achieved by providing a ground to pins 4 (up) and 5 (down) through a momentary contact cyclic switch.

3.

4.

INTERNAL ENABLE/DISABLE JUMPER

The programming and direct frequency entry modes can be disabled by removing the internal enable/disable jumper. Removal of this jumper will prevent operation on any frequencies other than those programmed in the 100 memory positions and two guard receiver memory positions.

The transceiver is always shipped with this jumper in the entry enable position. To place the jumper in the disable position:

1.

Remove and retain the seven (7) No. 4-40 screws securing the bottom cover of the transceiver to its chassis.

2.

Remove and retain the four (4) No. 4-40 screws securing the guard receiver PCB module in the chassis tray. Remove the guard receiver module from the chassis tray.

Remove and retain the two (2) screws securing the fuse board. Remove and retain the five

(5) screws securing the chassis tray to the main chassis. Remove the chassis tray.

You should now have access to the Microprocessor Control Unit (MCU) PCB Module (See

Figure 3-3). Remove the enable/disable jumper from pins 3 and 4 of J15.

5.

Reverse steps 1 through 3 and secure all screws to re-assemble the transceiver.

3-5

Microprocessor Control Unit (MCU) PCB Module

Notes: R23 is High Power Adjustment

R24 is Low Power Adjustment

J15 Jumper between pins 3 and 4 for Entry Enable

Remove for Entry Disable

FIGURE 3-3 Internal Enable/Disable Jumper and Transmit High/Low Power Adjust Locations

3-6

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 RFpower readjustment is required, perform as follows:

1.

Remove bottom cover as described in the previous paragraph (3.8). Access to the two adjustment potentiometers on the Microprocessor Control Unit (MCU) PCB Module is provided by two access holes located at the back of the chassis tray.

2.

3.

4.

Connect an RF through-line wattmeter to the antenna connector. Set the operating frequency to 156.000 MHz and key the transmitter.

In low power mode, set the low power adjustment potentiometer R24 to produce 1.0 watt of RF output power (See Figure 3-3).

In high power mode, set high power adjustment potentiometer R23 to produce 9.5 watts of RF output power.

5.

6.

Verify that the RF output power is between 8 and 10 watts on 138.000 MHz, 156.000 MHz and 174.000 MHz.

Replace bottom cover as described in the previous paragraph (3.8).

3.10

TRANSMITTER MICROPHONE LEVEL ADJUSTMENT

1.

Set the transceiver operating frequency to 156.000 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.

2.

3.

4.

Key the transmitter and input a -10 dBm (0.25 VRMS), 1 kHz audio signal into the microphone input.

Adjust the microphone level potentiometer (R8 on MCU module) through the access hole located on the right side of the chassis (see Figure 3-4) to produce a 3.5 kHz deviation.

Verify that the deviation is at least 3 kHz on the following frequencies: 138.000 MHz,

156.000 MHz and 174.000 MHz.

3.11

TRANSMITTER SIDETONE LEVEL ADJUSTMENT

1.

Set the transceiver operating frequency to 156.000 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.

2.

Key the transmitter and input a -10 dBm (0.25 VRMS), 1 kHz audio signal into the microphone input.

3.

Adjust the sidetone level potentiometer (R37 on MCU module) through the access hole located on the left side of the chassis (see Figure 3-4) to produce a +3.0 dBm (1.0

VRMS) 600 ohm audio output.

3-7

FIGURE 3-4 Microphone and Sidetone Level, Main and Guard Squelch Adjustment Access Holes

3-8

3.12

MAIN AND GUARD SQUELCH ADJUSTMENT

The squelch on both the main and guard receivers is factory set to open at approximately 1.0

microvolt. This adjustment can be made or altered to suit local conditions as follows:

1.

Set the main receiver of the transceiver to 156.000 MHz. Connect a signal generator to the antenna input of the transceiver.

2.

Set the signal generator to produce a ±3 kHz deviation with a 1 kHz tone on 156.000 MHz.

Set the signal generator RF level to 1.0 uV . The squelch indicator LED is on and signal is heard. Set the generator to 0.6uV. The squelch indicator should go off and no signal heard.

3.

4.

3.13

TRANSMITTER DEVIATION ADJUSTMENT

1.

Remove and retain the eight (8) No. 4-40 screws securing the top cover of the transceiver to its chassis. You should now have access to the Main Rx/Tx Module.

2.

3.

Set the transceiver operating frequency to 156.000 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.

Key the transmitter and input a +10 dBm (2.5 VRMS), 1 kHz audio signal into the microphone input.

4.

If not, re-adjust main receiver squelch potentiometer, R3 through the access hole located on the bottom of the transceiver chassis (see Figure 3-4).

Repeat the above procedure to adjust the guard receiver squelch setting using guard receiver squelch adjustment potentiometer, R4 (see Figure 3-4).

5.

Adjust the wideband deviation limit potentimeter, R30 on the main Rx/Tx module (see

Figure 3-5) to produce a ±4.45 kHz deviation.

Adjust the narrowband deviation limit potentiometer, R76 on the main Rx/Tx module to produce a ±2.2 kHz deviation.

Verify that the deviation does not exceed ±5 kHz for wideband and ±2.5 kHz for narrowband on the following frequencies: 138.000 MHz, 162.000 MHz and 174.000

MHz. Re-adjust R30 or R76 as required, if the deviation exceeds ±5 kHz or ±2.5 kHz, respectively.

6.

Place top cover on transceiver chassis and secure all eight (8) screws.

3.14

GUARD RECEIVER AUDIO LIMIT FEATURE

2.

3.

Upon special request, 1 mW of guard receiver audio bleed with the guard volume control in the fully

CCW (OFF) position, can be provided. This feature can be disconnected as follows:

1.

Remove and retain the seven (7) No. 4-40 screws securing the bottom cover of the transceiver to its chassis.

Find the jumper located at the bottom of the front panel is connected between the CCW position of the guard audio potentiometer (R2) and ground. Remove this jumper.

Replace the bottom cover of the transceiver and secure with the seven (7) screws removed in step 1.

3-9

Main Receiver/Transmitter PCB Module

Notes: R30 is for 5.0 kHz (wideband) Deviation Adjustment

R76 is for 2.5 kHz (narrowband) Deviaton Adjustment

FIGURE 3-5 Deviation Adjustment Potentiometer Location

3-10

APPENDIX TO “INSTALLATION INSTRUCTIONS”

POST INSTALLATION EMI TEST

PURPOSE

The purpose of this test is to identify any interference that the TFM-138, TFM-138A or TFM-138B may cause with existing aircraft systems. For simplicity all TFM-138 model variations will be referred as TFM-138 series transceivers in this document.

TEST CONDITIONS

The TFM-138 series transceiver should be installed and function tested. The antenna VSWR should be checked. A forward/reverse power check with a in-line wattmeter should show no more than

10% reflected power. For the following tests, insure 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-138 series 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/ILS/GS receivers should be set to the frequencies indicated and selected for display If possible, set up a

VOR/ILS 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. If possible set the ADF to a nearby navigation station.

Modulate the TFM-138 series 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).

List the power plant, fuel and other electric instruments in the chart provided and note any anomalies that occur while transmitting. 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-138 series 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.

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-138 series unit is transmitting, providing that it recovers properly and promptly, but it is not permissible for an IFR Approach certified GPS to 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.

A-1

PROCEDURE

A.

Operate the TFM-138 series transmitter on the following frequencies for at least 20 seconds.

Observe the GPS for any degradation in satellite status or availability or flags.

FREQUENCIES

TFM 138

143.180 MHZ

143.1825 MHZ

157.5000 MHZ

157.5425 MHZ

PASS

GPS #1

FAIL PASS

GPS #2

FAIL

NOTES:

A-2

B.

Determine if the image frequency for the VHF Comm falls within the range of the TFM-138 series unit. If so, select a set of frequencies that will cause the TFM-138 series unit 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-138 series 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-138 series Transceiver to 142.8000 MHZ.

VHF #1

135.975

121.150

131.250

Image:

FREQUENCIES

TFM-138 series

138.0000

157.5000

157.5000

RESULTS

PASS FAIL

VHF #2

135.975

121.150

131.250

Image:

FREQUENCIES

TFM-138 series

138.0000

157.5000

157.5000

RESULTS

PASS FAIL

NOTES:

A-3

C.

Determine if the image frequency for the VOR/ILS Nav falls within the range of the TFM-138 series unit. If so, select a two sets of frequencies that will cause the TFM-138 series transceiver to be set as close as possible to the image frequency. Chose one set in the localizer frequency range, and one in the VOR frequency range. Record those values in the spaces provided in the following chart. Modulate the TFM-138 series 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.

RESULTS

PASS FAIL VOR/ILS #1

108.000

108.100

Image:

Image:

FREQUENCIES

TFM-138 series

162.0000

162.1500

VOR/ILS #2

108.000

108.100

Image:

Image:

FREQUENCIES

TFM-138 series

162.0000

162.1500

RESULTS

PASS FAIL

NOTES:

A-4

D.

Modulate the TFM-138 series transmitter on the following frequencies for at least 20 seconds. Look for any moment of flags or needles on the navigation display.

G/S #1

334.7 (108.1)

FREQUENCIES

TFM-138 series

167.3500

RESULTS

PASS FAIL

G/S #1

334.7 (108.1)

FREQUENCIES

TFM-138 series

167.3500

RESULTS

PASS FAIL

NOTES:

A-5

NOTE:

For the following tests, select a frequency at the top, middle and bottom of the range of the TFM -

138 series transceiver.

Frequency #1 ______________

Frequency #3 ______________

Frequency #2 ______________

E.

At a safe altitude engage the autopilot or stability augmentation system. Modulate the TFM-

138 series transmitter on the above frequencies for at least 20 seconds. Observe any effect on the autopilot or stability augmentation system.

Observations:

F.

Perform a coupled ILS approach to the aircraft's certified limits. Modulate the TFM-138 series transmitter on the above frequencies for at least 20 seconds. Observe any effect on the autopilot. Repeat for each different system such as ILS #2, GPS, FMS ETC.

Observations:

A-6

G.

List the power plant, fuel and other electric instruments in the chart provided and note any anomalies that occur while transmitting. Assess the results.

PASS FAIL NOTES

8

9

10

6

7

4

5

STEP

1

SYSTEM

Xponder & Encoder

2

3

ADF 1 & 2

VG

Compass

Directional Gyro

Oil Pressure

Fuel Pressure

Oil Temp

Amps

Bus Voltage

A-7

15

16

13

14

STEP

11 Fuel %

12 Ng

TOT

Torque %

Annunciators

Digital Clock

SYSTEM PASS FAIL NOTES

A-8

STEP SYSTEM PASS FAIL NOTES

A-9

STEP SYSTEM PASS FAIL NOTES

A-10

STEP

NOTES:

SYSTEM PASS FAIL NOTES

A-11