Uniden BearCat PC78XL+, Owner'S Manual

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4
Check antenna, cable, and connections.
12.
Dynamic Squelch Control (DSC)
switch: Automatically sets
Squelch to optimal level for stronger signals.
13.
CH9/OFF
switch: Turns Channel 9 on or off.
14.
BRT/DIM
switch: Adjusts the LED brightness.
15.
CB/PA
switch: Selects CB (Citizen’s Band) or PA (Public Address).
Do not use PA function unless an external speaker is connected.
16.
NB/ANL
switch: Reduces external noise and interference from
vehicle ignition systems.
17.
S/RF/SWR/ CAL
switch: Selects meter function. S/RF - normal;
SWR
and
CAL
are for SWR measurements only. See page 8 for
calibration procedures.
18. Multi-function meter: Measures SWR, RF and S signal strength.
19.
POWER
connector: Connects DC power to transceiver.
20.
EXT. SP.
jack: Connects optional 8-ohm 4-watt speaker to
remotely monitor the receiver.
When the external speaker is plugged in, the internal speaker is off.
21.
PA SP.
jack: Connects external 8-ohm, 4-watt speaker.
To prevent acoustic feedback, separate the microphone from the speaker
when operating the PA at high output levels.
22. Antenna socket: Connects antenna cable to transceiver.