Uniden PC122XL - Manual (Page 6)

this setting. The squelch is now properly set. The receiver wilt remain quiet until a
signal is actually received. Do not advance the control too far, or some weaker
signals wilt not be heard.
OPERATING PROCEDURE TO TRANSMIT
1. Select the desired channel for transmission.
2. if the channel is dear, depress" the push-to-talk switch on the side of the micro­
phone and speak in a normal voice.
CAUTION: The transceiver Voltage Standing Wave Ratio (V.S.W.R.) measurement
must be performed prior to the use of the transmitter, A "V.S.W.R.'' ratio in excess of
2:1 may damage the transmitter.
OPERATION OF SSB
Choose the desired side band frequency by, A; select standard channel (1 — 40), B;
select Upper or Lower side band by moving AM/SSB switch. Transmit or receive
according to previous instructions.
When receiving a side band transmission you may need to use the Clarifier control to
fine tune that frequency. Rotate the Clarifier clockwise or counterclockwise for
optimum reception.
PREVENTATIVE MAINTENANCE
At six to twelve month intervals, the following system checks should be made:
1. Check the Standing Wave Ratio (V.S.W.R.)
2. Inspect all electrical connections.
3. Inspect antenna coaxial cable for wear,
4. Inspect all screws and other mounting hardware,
TROUBLE SHOOTING
If your PC122XL is not performing up to your expectations, please try these simple steps.
If you still cannot get satisfactory results after reading this manual and following the
trouble shooting steps, you may need to have your unit serviced.
trouble check
Unit will not turn on.
No power 1. Check power cord and all connections.
2. Check power cord fuse.
3. Check vehicle electrical system.
Poor reception 1. Check and adjust Squelch.
2. Check antenna system and cable, connectors.
3. Check operation mode of the radio.
Weak transmission 1. Check antenna system and cable, connectors,
2. Check antenna grounding.
3. Check for corrosion on connectors.
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