Uniden PC78LTX Owners Manual - Page 7

Rear View

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Item 14 15 16 17 Definition CB/PA: Selects CB (Citizen's Band) or PA (Public Address). Do not use PA function unless an external speaker is connected. NB/ANL/ANL/OFF switch: Reduces external noise and interference from vehicle ignition systems. S/RF/SWR/ CAL switch: Selects meter function. S/RF- normal; SWR and CAL are for SWR measurements only. See page 11 for calibration procedures. Multi-function meter: Measures SWR, RF and S signal strength. REAR VIEW 8 9 Item 18 19 20 21 Definition Antenna socket: Connects antenna cable to transceiver. 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. 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. POWER connector: Connects DC power to transceiver 7

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7
Item
Definition
14
CB/PA
:
Selects CB (Citizen’s Band) or PA (Public Address).
Do not use PA function unless an external speaker is connected.
15
NB/ANL/ANL/OFF
switch: Reduces external noise and interfer-
ence from vehicle ignition systems.
16
S/RF/SWR/ CAL
switch: Selects meter function. S/RF- normal;
SWR
and
CAL
are for SWR measurements only. See page 11 for
calibration procedures.
17
Multi-function meter: Measures SWR, RF and S signal strength.
REAR VIEW
9
8
Item
Definition
18
Antenna socket: Connects antenna cable to transceiver.
19
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.
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
POWER
connector: Connects DC power to transceiver