TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TAF-550 Installation & Operating Instructions
TiL 96RE187 Rev D
3-8
3.3.3 Receiver
Operation
To operate either transceiver in the receive mode, proceed as follows:
(1)
Ensure that the PRESS TO TALK switch on the microphone is NOT depressed, and
verify that the Tx ON amber LED is OFF on the 91-DE or that the alphanumeric display
on the TFM-138B does not indicate “TX” or “TT”.
(2)
Verify that the correct operating frequency is displayed on the liquid crystal display (LCD)
on the 91-DE or the alphanumeric LED display on the TFM-138B. Refer to Front Panel
Keypad Operation, paragraph 3.4 for Channel/Frequency selection on the 91-DE. Refer
to paragraph
(3)
Adjust the SQUELCH control to suit local reception conditions. When the SQUELCH
control is rotated in the counter-clockwise direction, the SQUELCH indicator green LED
will switch to ON, indicating that the squelch circuit is connecting the demodulated audio
output to the VOLUME control.
Further adjustment of the SQUELCH control determines the squelch setting.
(4)
The VOLUME control can then be adjusted in a clockwise direction to increase the audio
level, or in a counter-clockwise direction to decrease the audio level which can be heard
on the internal loudspeaker.
NOTE
When an external loudspeaker or headset is connected to
the SPEAKER/PHONE jack of the transceiver, the internal
loudspeaker is automatically disconnected. The VOLUME
control will now control the audio level applied to the
external loudspeaker or headset, as applicable.
(5)
Refer to paragraph 3.4 for Front Panel Keypad Operation and additional Operating
modes.
3.3.4 Switching OFF
To switch off the transceiver:
(1)
Set the POWER ON/OFF on transceiver to switch to OFF.
(2)
Verify that all indicator LED's on the front panel are OFF.
