Technisonic Industries Limited TFM-550 Operator's Manual
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Technisonic Industries Limited TFM-550 Operator's Manual

Vhf high/vhf low/uhf multi-band fm airborne transceiver
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TFM-550
OPERATOR'S
VHF High/VHF Low/UHF Multi-band
GUIDE
FM Airborne Transceiver
___________________________________________________________________
WARRANTY INFORMATION

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Summary of Contents for Technisonic Industries Limited TFM-550

  • Page 1 TFM-550 OPERATOR’S VHF High/VHF Low/UHF Multi-band GUIDE FM Airborne Transceiver ___________________________________________________________________ WARRANTY INFORMATION...
  • Page 2 The Model TFM-550, Transceiver is under w arranty for one year from date of purchase. Failed units caused by defective parts, or w orkmanship should be returned to: Technisonic Industries Limited Technisonic Industries Limited 250 Watline Avenue 3840 E. Robinson Road, Suite 214...

  • Page 3: Model Variation

    Data may also be entered via computer w ith the provided softw are and optional PC Up/dow nload cable, P/N 993390-1. MODEL VARIATION There are four variations of the Model TFM-550 Transceiver. All units offer identical features and performance except for the follow ing differences: TFM-550, P/N 991095-1 GREEN display and 28 Volt back lighting.
  • Page 4 TFM-550 OPERATIONAL FEATURES The equipment has several important operating features w hich provide maximum flexibility, performance and versatility. The described features are a function of Version ML1 softw are. The UHF band can be configured to be operated independently of the VHF High and VHF Low bands or all three bands can operate as a single unit.
  • Page 5 TFM-550 OPERATIONAL FEATURES - continued Configuration Menu - Pressing ENTER, RCL and FUNC together w hile turning the radio on w ill put it into configuration mode. The programming features affected are: a) DPL - Can be turned on or off w ith the 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 w orking.
  • Page 6 FIGURE 1 Operator's Switches and Controls...
  • Page 7 OPERATING INSTRUCTIONS (See Figure 1) Switch power on by turning the VHF 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. NOTE: VHF high band will be referred to as “VHF”...

  • Page 8: Programming Instructions

    OPERATING INSTRUCTIONS - continued 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.
  • Page 9 PROGRAMMING INSTRUCTIONS - continued Press the FUNC key. The display will show the function prompt. Press the PROG key. The display will show the current receive frequency with a flashing curser on the first or second digit (The first digit is always a one <1> on the VHF band and there is no hundreds digit on the VHF LOW band).
  • Page 10 PRIORITY SCANNING, SELECTIVE MEMORY CHANNEL SCANNING AND SCAN LISTS Instead of breaking up the 200 channels into blocks for scanning, the TFM-550 has 5 scan lists per band (VHF high and UHF only). Any of the 200 channels can be assigned to any one or more of these 5 scan lists.
  • Page 11 PRIORITY SCANNING, SELECTIVE MEMORY SCANNING - continued Selective memory scanning allow s the user to select w hich of the 200 memory channels are to be scanned or locked out w hen the scanning is invoked. To use this feature, follow the PROGRAMMING INSTRUCTIONS found in above paragraph .

  • Page 12: Direct Frequency Entry Mode

    SCANNING FUNCTION (5 second talkback delay) - continued The radio w ill scan through all the preset memory positions in the selected scan list (see above paragraph for priority and selective scan features) and w ill lock on to the first active channel in the scan sequence.

  • Page 13: Receive Frequency Simplex Function

    DIRECT FREQUENCY ENTRY MODE - continued On the VHF Low or UHF band press FUNC and then 1 and the desired frequency ie/ 33.2750 or 443.5500. You will then be asked for 12.5 or 25.0 kHz channel spacing. Select with MUP or MDN and press ENTER.

  • Page 14: Keyboard Lockout Function

    KEYBOARD LOCKOUT FUNCTION The keyboard can be locked out so that accidental pressing of keys does not change frequency, etc., unknow ingly to the operator. To lock the keyboard, press FUNC then LOCK. This w ill disable all keyboard functions (except keyboard unlock) in the receive mode.

  • Page 15: Second Transmitter Time Out Feature

    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 sw itch. With this feature enabled the transceiver w ill stop transmitting after the PTT is engaged continuously for 90 seconds. The timer is reset by releasing then re-engaging the PTT sw itch.
  • Page 16 PROGRAMMING CTCSS TONES/DPL CODES - continued Number Tone Number Tone Number Tone 67.0 162.2 177.3* 71.9 167.9 183.5* 74.4 173.8 189.9* 77.0 179.9 196.6* 79.7 186.2 199.5* 82.5 192.8 206.5* 85.4 203.5 210.7* 88.5 33.0* 218.1* 91.5 35.4* 225.7* 94.8 36.6* 229.1* 97.4...
  • Page 17 PROGRAMMING CTCSS TONES/DPL CODES - continued Number Tone Number Tone 136.5 63.0* 141.3 69.4* 146.2 159.8* 151.4 165.5* 156.7 171.3* Press ENTER. " TX TONE" appears on the display. Repeat step 3. Press ENTER. " G1 TONE" appears on the display. Repeat step 3. Press ENTER.
  • Page 18 PROGRAMMING CTCSS TONES/DPL CODES - continued 017* 266* 053* 122* 274* 356* 246* 446* 452* 523* 252* 454* 526* 036* 212* 255* 325* 455* 145* 462* 225* 332* 050* * indicates GE Digital Coded Squelch (DCS) Code Press ENTER. " TX DPL" appears on the display. Repeat step 8. Press ENTER.

  • Page 19: Cross Band Repeat

    CROSS BAND REPEAT The TFM-550 can act as a cross band repeater between VHF (high band only) and UHF. To enter repeat mode, press FUNC and then 9. The status line will show REPEAT instead of the band switch selection. When a signal is received on one of the bands, the audio is routed to the transmitter of the other band.
  • Page 20 Technisonic Industries Limited 2 5 0 W atline Avenue, M ississauga, Ontario L4 Z 1 P4 Tel:(9 0 5 )89 0 -2 1 1 3 Fax:(9 0 5 )8 9 0 -5 33 8 3 8 4 0 East Robinson Road, Suite 2 1 4 , Amherst, New York 1 42 2 8 Tel:(7 1 6 )6 9 1 -0 66 9...

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