Technisonic Industries Limited TFM-530 User manual

VHF/VHF LO FM
AIRBORNE TRANSCEIVER
MODEL TFM-530
(P/N’s 031216-1,2,3,4)
Installation and
Operating Instructions
Til Document No.
03RE317
Rev. B
Issue 4
March 2007
Technisonic Industries Limited
240 Traders Boulevard, Mississauga, Ontario L4Z 1W7
Tel:[phone] Fax:[phone]
www.til.ca

WARNING For compliance with FCC RF Exposure Requirements, the mobile
transmitter antenna installation shall comply with the following two
conditions:
1. The transmitter antennagainshallnotexceed2.15 dBi
2. The transmitter antenna is required to be located outside of a vehicle and keptataseparation
distance of37cm or more between the transmitter antenna of this device and persons during
operation.
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-530, 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: [phone] Fax: [phone]
A Page

Summary of DO-160C Environmental Testing for Technisonic Model TFM-530, VHF and VHF Low Transceiver:
Conditions Section Description of Conducted Tests
Temperature and Altitude 4.0 Equipment tested to categories B2 and D1.
Vibration 8.0 Equipment is tested without shock mounts to
categories B, M and N.
Magnetic Effect 15.0 Equipment is class A.
Power Input 16.0 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 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

TABLE OF CONTENTS
Paragraph Title Page
SECTION 1 GENERAL DESCRIPTION
1.1 Introduction .......................................................... 1-1
1.2 Description ........................................................... 1-1
1.3 Purpose of Equipment ................................................... 1-1
1.4 Model Variation ....................................................... 1-1
1.5 Technical Summary ..................................................... 1-2
SECTION 2 OPERATING INSTRUCTIONS
2.1 Features ............................................................. 2-1
2.2 Operating Instructions .................................................. 2-3
2.3 Programming Instructions ................................................ 2-4
2.4 Priority and Selective Memory Channel Scanning ............................... 2-4
2.5 Scanning Function ...................................................... 2-5
2.6 Direct Frequency Entry Mode ............................................. 2-5
2.7 Receive Frequency Simplex Function ........................................ 2-6
2.8 Keyboard Lockout Function ............................................... 2-6
2.9 Variable Frequency Mode Function .......................................... 2-6
2.10 LED Display Variable Dimming Mode ........................................ 2-6
2.11 90 Second Transmitter Time Out Feature .................................... 2-6
2.12 Quick Guard Programming Feature ......................................... 2-6
2.13 Programming CTCSS Tones ............................................... 2-7
2.14 PC Memory/Programming Download Capability ................................. 2-8
SECTION 3 INSTALLATION INSTRUCTIONS
3.1 General ............................................................. 3-1
3.2 Equipment Packing Log .................................................. 3-1
3.3 Transceiver Installation .................................................. 3-1
3.4 Installation Kit - Contents ................................................ 3-1
3.5 Antenna Installation .................................................... 3-1
3.6 Installation - Pin Locations and Connections ................................... 3-1
3.7 Wiring Instructions ..................................................... 3-6
3.7.1 Main Power +28VDC ................................................... 3-6
3.7.2 Main Ground .......................................................... 3-6
3.7.3 PTT (Ground Keying) .................................................... 3-6
3.7.4 Front Panel Back Lighting ................................................ 3-6
3.7.5 Audio Outputs (600 and 4 Ohms) .......................................... 3-6
3.7.6 Audio Output Ground ................................................... 3-6
3.7.7 Mic Signal Input ....................................................... 3-6
3.7.8 Memory Up/Memory Down ............................................... 3-6
3.7.9 Data Input ........................................................... 3-6
3.8 Internal Programming and Guard Enable/Disable Jumper .......................... 3-7
3.9 Transmitter Power Adjustments ........................................... 3-8
3.10 Transmitter Microphone Level Adjustment .................................... 3-8
3.11 Main and Guard Squelch Adjustment ....................................... 3-10
3.12 Transmitter Deviation Adjustment ......................................... 3-10
SECTION 3 INSTALLATION INSTRUCTIONS - APPENDIX
Post Installation EMI Test ................................................ A-1
i

LIST OF TABLES
Table No. Title Page
3-1 9-pin D and 15-Pin D Connections .......................................... 3-3
LIST OF ILLUSTRATIONS
Figure No. Title Page
2-1 Operator's Switches and Controls .......................................... 2-2
2-2 PC Up/Download Cable - Wiring Diagram ..................................... 2-9
3-1 Outline Drawing ....................................................... 3-2
3-2 Wiring Connections ..................................................... 3-4
3-3 Low Pass Filter Outline Drawing & Installation Details ........................... 3-5
3-4 Interal Enable/Disable Jumper Locations ...................................... 3-7
3-5 External Adjustment Access Holes ......................................... 3-9
3-6 VHF Deviation Adjustment Potentiometer Location ............................. 3-11
3-7 VLO Deviation Adjustment Potentiometer Location ............................. 3-12
ii

1-1
SECTION 1
GENERAL DESCRIPTION
1.1 INTRODUCTION
This publicationprovidesoperatingandinstallationinformationontheTFM-530Transceiver. 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-530 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-530, Transceiver is a frequency agile, fully synthesized airborne transceiver capable of operating
in the 138 to 174 MHz and 30 to 50 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 or VHF Low Band synthesized guard receiver.
The TFM-530 Transceiver provides 200 operator accessible memory positions per band, each of which
is capable of storing a transmit frequency, receive frequency, transmit CTCSS tone or DPL code, receive
CTCSStone orDPL code,an alphanumericidentifier foreach channelandwideband(25kHz) ornarrowband
(12.5 kHz) channel spacing assignment. Operating frequency and other related data are presented on a
96 character, four 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/NT/2000/ME/XP based computer with the provided software and
optional PC Up/download cable, P/N 993390-1.
1.3 PURPOSE OF EQUIPMENT
The TFM-530, VHF/VLO FM Transceiver is designed to provide secondary airborne communications to
facilitate operations which 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-530 Transceiver. All units offer identical features and
performance except for the following differences:
TFM-530, P/N 031216-1 GREEN display, 28 V back lighting and VHF guard.
TFM-530, P/N 031216-1 (5V), GREEN display, 5 V back lighting and VHF guard.
TFM-530, P/N 031216-2 GREEN display, 28 V back lighting VLO guard.
TFM-530, P/N 031216-2 (5V), GREEN display, 5 V back lighting VLO guard.
TFM-530, P/N 031216-3 RED display, 28 V back lighting and VHF guard.
TFM-530, P/N 031216-3 (5V), RED display, 5 V back lighting and VHF guard.
TFM-530, P/N 031216-4 RED display, 28 V back lighting and VLO guard.
TFM-530, P/N 031216-4 (5V), RED display, 5 V back lighting and VLO guard.
Both P/N's 031216-1 and 031216-3 are always provided with 28 Volt back lighting unless a specific
request is made for 5 Volt AC operation.

1-2
1.5 TECHNICAL CHARACTERISTICS
Specification Characteristic
GENERAL
Model Designation: TFM-530
Frequency Range: 138 to 174 and 30 to 50 MHz
Tuning Increments: 2.5 kHz
Operating Mode: F3E simplex or semi-duplex
Channel Spacing: 25 or 12.5 kHz
Physical Dimensions (including heatsink): Approx. 8.0" X 3.75" X 5.75"
Weight: Approx. 5.1 Lbs (2.3 Kg)
Mounting: Panel Mount via Dzus fastners
Operating Temperature Range: -40EC to +60EC
Power Requirement:
Voltage: 28.0 Vdc, ± 15%
Current: Receive - 1.0 A Max.
1 Watt Transmit - 2.0 A Max.
8-10 Watt Transmit - 3.2 A Max.
8-10 Watt Dual Trans - 5 A Max.
Frequency Selection: 200 memories per band
programmed with:
a) Tx Frequency/Rx Frequency
b) Tx/Rx CTCSS tone or DPL code
c) 9 character alpha numeric title
Guard Receiver: 2 channels programmed with:
a) Tx Frequency/Rx Frequency
b) Tx CTCSS tone or DPL code
c) 9 character alpha numeric title
CTCSS squelch/encoder: All CTCSS tones available
DPL digital squelch/encoder: All standard DPL codes
DTMF encoder: All standard DTMF tones
Audio Outputs: 0.5 Watts into 600 ohms
Speaker Output: 2.5 Watts min. into 4 ohms
Back Lighting: 28 Volts (standard) or
5 Volts (specify)
Display Colour: Green (standard) or Red (specify)
DPL is a trademark of Motorola Corporation

1-3
1.5 TECHNICAL CHARACTERISTICS (continued)
VHF RECEIVER
Sensitivity at 12 dB SINAD Better than 0.35 µV
Adjacent Channel Selectivity -75 dB (25 kHz)
-70 dB (12.5 kHz)
Spurious Attenuation -90 dB
Third Order Intermodulation -70 dB
Image Attenuation -80 dB
FM Acceptance ± 6 kHz
Hum and Noise Better than 45 dB
Audio Distortion Less than 5%
Antenna Conducted Emission Less than -70 dBm
VLO (Low Band VHF) RECEIVER
Sensitivity at 12 dB SINAD Better than 0.5 µV
Adjacent Channel Selectivity -70 dB (25 kHz)
-60 dB (12.5 kHz)
Spurious Attenuation -80 dB
Third Order Intermodulation -70 dB
Image Attenuation -60 dB
FM Acceptance ± 6 kHz
Hum and Noise Better than 40 dB
Audio Distortion Lless than 5%
Antenna Conducted Emission Less than -70 dBm
GUARD RECEIVER
All specifications identical to VHF or VLO receiver depending which is installed.

1-4
VHF and VLO TRANSMITTER
RF Power Output 1 watt or 10 watts
Output Impedance 50 ohms
Maximum Deviation ±5 kHz (25 kHz mode)
(In narrowband mode) ±2.5 kHz(12.5kHz mode)
Spurious Attenuation -70 dB below carrier level
Frequency Stability ± 2.5 ppm
Microphone Circuit Carbon or equivalent
Sidetone Output 0.5W (max) into 600S
Harmonic Attenuation -60 dB below carrier level
FM Hum And Noise -40 dB
Audio Input 50 mV at 2.5 kHz into
200 Sinput circuit for
±3.5kHz deviation, adjst.
Audio Distortion Less than 5%

2-1
SECTION 2
OPERATING INSTRUCTIONS
2.1 FEATURES
The equipment has several important operating features which provide maximum flexibility,
performance and versatility. These features include:
1. VHF and VLO bands that can be configured to be operated independently or as a single unit.
2. The unit can be set up as a crossband repeater, linking a VHF and VLO 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 9-character
alphanumeric title.
4. 2 guard channels which can each be programmed with a 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 preprogrammed memories with selective memory scanning, in 5 scan lists.
6. Priority scan of memory channel 1, if desired.
7. Direct frequency entry mode.
8. Receive frequency simplex function.
9. Switchable RF output power 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 configuration mode.The programming features
affected are:
a) DPL - Can be turned on or off with th MUP and MDN (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- 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.
c) Rx CTCSS - Can be turned on or off from the programming sequence. This affects only the CTCSS
tones for receive.
d) FUNC 7 - Can be turned on or off. When off, the main memory channel can not 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 comes up when the
radio is turned on. If set to off, the last memory that changes were made to will be what
comes up when the unit is switched on.
f) DUALMODE - If set to on, the VLO and VHF bands are operated independently and simultaneously.
The radio is shipped with this feature OFF. Dual mode is not available on a TFM-530 with a
low band guard receiver installed.
g) SIDETONE - The TX audio circuit becomes active allowing you to adjust the sidetone level with the
VHF volume knob. When thedesired level is reached, press ENTER and this level will be set
for both VHF and VLO bands. The factory setting is 23.
Important: 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.

2-2
FIGURE 2-1 Operator's Switches and Controls

2-3
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, VLO 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. Similarily, in the transmit mode either a "TT" or "TX" is shown after the
frequency. The second line shows the same information for the VLO band. The third line indicates
information about the VHF or VLO 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/VLO/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.

2-4
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/VLO/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 cursor
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, then press ENTER.
8. 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. 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-530’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 to (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.
2.4 PRIORITY SCANNING, SELECTIVE MEMORY CHANNEL SCANNING AND SCAN LISTS
Instead of breaking up the 200 channels into blocks for scanning, the TFM-530 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 to be in more than one block and that 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 (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.

2-5
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 totoggle to the desired condition. TheMDN button acts
as a clear while pressing one or more of the above numbers adds the memory to the corresponding
scan list or lists. PressENTER 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 VLO) at a time. When the
transceiver is in the single mode (combined VHF and VLO 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 effecting 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 can not scan the guard)
To start scanning of the memory channels, pressFUNC then SCAN and then the number (1,2,3,4,5)
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 5 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.
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 ie/ 153.2750.
2. On the VLO band press FUNC and then 1and the desired frequency ie/ 43.5500.
3. You will then be asked for 12.5 or 25.0 kHz channel spacing. Select withMUP orMDN and press
ENTER.
Please note in the above operation, after FUNC and "1"are entered, the LED display will show
memorychannel "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 (TALK AROUND) 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, selectVHF
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 quickly done by pressingM.UP
for one step up, then back down one step with the M.DN key.

2-6
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 then LOCK.This will disable all
keyboardfunctions (except keyboard unlock) in the receive mode. The DTMF function during transmit
will not be affected. To unlock the keyboard, press and hold theLOCK 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
entrymode 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 andDN 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 is not stored in memory. To exit this mode, recall one of the 200 memory channels (ie. RCL,
0,0,1). Variable frequency mode is disabled when the internal entry disable jumper is set.
2.10 LED DISPLAY VARIABLE DIMMING MODE
1. With the transceiver in normal operating mode press the UP or DN keys to increase or
decrease the intensity of the LED display.
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 TIME OUT FEATURE
Aselectable 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 theFUNC then the M.UP key. Use the M.UP andM.DN keys
to select 90 SEC, which enables the feature, or NONE which disables it.
2.12 QUICK GUARD PROGRAMMING FEATURE
Aquick download of any of the 200 VHF or VLO memory positions (depending on which type of guard
is installed) 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 guardmemory 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. The following
is a list of the available CTCSS tones:

2-7
Number Tone Number Tone Number Tone
01 67.0 26 162.2 51 177.3*
02 71.9 27 167.9 52 183.5*
03 74.4 28 173.8 53 189.9*
04 77.0 29 179.9 54 196.6*
05 79.7 30 186.2 55 199.5*
06 82.5 31 192.8 56 206.5*
07 85.4 32 203.5 57 210.7*
08 88.5 33 33.0* 58 218.1*
09 91.5 34 35.4* 59 225.7*
10 94.8 35 36.6* 60 229.1*
11 97.4 36 37.9* 61 233.6*
12 100.0 37 39.6* 62 241.8*
13 103.5 38 44.4* 63 250.3*
14 107.2 39 47.5* 64 No Tone
15 110.9 40 49.2* (carrier squelch only)
16 114.8 41 51.2* (The tones marked with * are
17 118.8 42 53.0* nonstandard tones).
18 123.0 43 54.9*
19 127.3 44 56.8*
20 131.8 45 58.8*
21 136.5 46 63.0*
22 141.3 47 69.4*
23 146.2 48 159.8*
24 151.4 49 165.5*
25 156.7 50 171.3*
4. Press ENTER. "TX TONE" appears on the display. Repeat step 3.
5. Press ENTER. "RX DPL" appears on the display.
6. 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:
017* 051 116 156 243 266* 346 431 466 612 721
023 053* 122* 162 244 271 351 432 503 624 731
025 054 125 165 245 274* 356* 445 506 627 732
026 065 131 172 246* 306 364 446* 516 631 734
031 071 132 174 251 311 365 452* 523* 632 743
032 072 134 205 252* 315 371 454* 526* 654 754
036* 073 143 212* 255* 325* 411 455* 532 662
043 074 145* 223 261 331 412 462* 546 664
047 114 152 225* 263 332* 413 464 565 703
050* 115 155 226 265 343 423 465 606 712
* indicates GE Digital Coded Squelch (DCS) Code
7. Press ENTER. "TX DPL" appears on the display. Repeat step 6.
8. Press ENTER and the changes will be saved.
Note: When programming the guard tones, you will only be asked for transmit tones as there is no
receive tone or DPL capability on the guard receiver.

2-8
2.14 PC MEMORY PROGRAMMING UP/DOWNLOAD CAPABILITY
The TFM-530 transceiver can be programmed by a Windows based personal computer using
Technisonic software supplied on CD with each TFM-530.
Requirements:
1. PC compatible computer with a CD ROM drive, running Windows 95/98/NT/2000/ME/XP.
2. Bench power supply of 28 volts DC.
3. 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-530 transceiver.
3. Connect the power supply to the TFM-530.
Installing the MultiTDP 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 MultiTDP directory
on the CD. Double click theMultiTDP.msi 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 from your
Start menu, then select Technisonic from the submenu and finally MultiTDP. If you are updating an
existing MultiTDP with a new version, select ‘Remove old version’ when running the new instal
program. Then rerun the instal program and the new version will be installed.
Using the MultiTDP 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 selectTFM-530.The program defaults to serial port com1 but can be set tocom2,
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 VLO 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 youv’e made to the data base below. After you have edited the
channel list your 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 data base 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.

2-9
TFM-530 Upload/Download Programming Cable
P/N 993390-1 Wiring Diagram
FIGURE 2-2 TFM-530 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

3-1
SECTION 3
INSTALLATION INSTRUCTIONS
3.1 GENERAL
This section contains information and instructions for the correct installation of the TFM-530,
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.
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-530 transceiver is designed tobe Dzus mounted and should be installed in conjunction with
aIN-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, Comant P/N CI-292-3 or suitable equivalent may be utilized for VHF and the Foxtronics
model FLX-3050B antenna/tuning system or Sensor Systems P/N S65-8282-34 may be utilized for
the VLO band. A suitable whip antenna cut for a specific VLO frequency may also be used. The
antenna should be mounted on the bottom of the aircraft whenever possible and must be located at
least 20 cm (8inches) from any occupant in the airframe. Consult with instructions provided with the
antennas. Connect RF cables from antennas to the back of the TFM-530 unit by utilizing the BNC
connectors provided in the installation kit. The VLO 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-530
transceiver are shown below. Pin connections are in provided in TABLE 3-1.
Transceiver mounted view of 15 pin female and 9 pin male connector

3-2
FIGURE 3-1 Outline Drawing for Model TFM-530 Transceiver