TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TAF-550 Installation & Operating Instructions
TiL 96RE187 Rev D
3-20
3.5.8
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 120 memory channels (ie. RCL, 0,0,1). Variable frequency mode is
disabled when the internal entry disable jumper is set.
3.5.9
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.
3.5.10 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.
3.5.11 Quick Guard Programming Feature
A quick download of any of the 120 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.
3.5.12 Programming CTCSS Tones/DPL Codes
NOTE
: The TFM-138B supports both CTCSS tone and DPL code functions.
CTCSS tones (PL tones) or Digital DPL codes can be assigned to each memory channel. The
guard receiver squelch will operate only on carrier detection, but guard 1 and 2 transmit tones or
codes can be programmed. To program a tone/code to a memory channel:
1.
Use the M.UP and M.DN keys to select the memory channel that you want to assign a
CTCSS tone or DPL code.
2.
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:
