TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TAF-550 Installation & Operating Instructions
TiL 96RE187 Rev D
3-17
3.5.1
OPERATING INSTRUCTIONS - continued
6.
Set the MN/GD switch to main or guard transmit frequency.
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. 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 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 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 tone or DPL code is
programmed and “RT”, if a CTCSS tone or DPL code is programmed.
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.
3.5.2 PROGRAMMING
INSTRUCTIONS
To program one of the 120 memory channels in the TFM-138B:
1.
Press the FUNC key. The display will show the function prompt.
2.
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>).
3.
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.
4.
The curser will return to the second digit. You can now retype the frequency if you made
an error or press ENTER to continue.
5.
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.
7.
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.
8.
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 3.5.4). Once the desired condition has been selected, press ENTER. The
display will show a "+" beside the memory channel number if scan is enabled.
