TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TAF-550 Installation & Operating Instructions
TiL 96RE187 Rev D
3-7
3.3.2 Transmitter
Operation
To operate either transceiver in the transmit mode select appropriate position of the FM/AM
selector switch and proceed as follows:
(1)
Set HI/LO (10W/1W) RF POWER switch to desired operating level on TFM-138B.
(2)
Hold the microphone in one hand, with the upper edge of the microphone as close as
Possible to the upper lip.
NOTE
This technique activates the noise cancelling feature of
the microphone. The microphone is most effective when
sound is ½ inch (12.7 mm) or more away from the
microphone.
(3)
Press and hold the PRESS TO TALK switch of the microphone during transmission.
(4)
Ensure that the Tx ON amber LED is ON, on the 91-DE front panel or that the
alphanumeric display on the main or guard (as selected) indicates “TX” or “TT” on the
TFM-138B. “TT” indicates a transmit CTCSS tone or DPL code has been programmed.
(5)
Speak slowly and distinctly into the microphone using specified operating procedures
during transmission.
(6)
When message is ended, release the PRESS TO TALK switch of the microphone.
(7)
The transceiver is now operating in the receive mode.
(8)
Verify that the Tx ON amber LED is OFF on the 91-DE or that “RX” or “RT” is indicated
rather than “TX” or “TT” on the alphanumeric display of the TFM-138B.
(9)
Refer to paragraph 3.4 for 91-DE Front Panel Keypad Operation and additional Operating
modes. Refer to paragraph 3.5 for completeTFM-138B operating instructions.
