Uniden Bearcat PC78 Elite Setup Manual page 5

UC343FH 10/23/03
17. CB/WX/PA: Selects PA (Public Address) WX (Weather Radio) or CB.
Do not use PA function unless an external
speaker is connected.
18. S/RF/SWR/ CAL: Selects meter function. S/RF- normal;
SWR and CAL are for SWR measurements only. See page 8 for
calibration procedures.
19. Multi-function Meter: Measures SWR, RF and S signal strength.
20. POWER: Connects DC power to transceiver.
21. EXT. SP.: Connects optional 8-ohm 4-watt speaker to remotely
monitor receiver.
When the external speaker is plugged in, the
internal speaker is off.
22. PA SP.: 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.
23. ANT.: Connects antenna cable to transceiver.
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