Uniden BC-880FM Owner's Manual page 8

13. Frequency Display: Displays the MHz of the selected channel. Also
displays menu options.
14. ANL/NB: Turns ANL (Automatic Noise Limiter) and NB (Noise
Blanker) features on and off. ANL reduces external noise and NB
reduces interference from vehicle ignition systems. Press ANL/NB
to turn ANL and NB on or off in the following configurations:
From ANL OFF/NB OFF
Press once.
Press twice.
Press three times.
Press four times.
15. AM/FM: Change AM/FM modulation. Press AM/FM to toggle
between AM or FM modulation.
NOTE: AM/FM does not switch when the Bearcat 880FM is in Weather (WX) mode.
16. RF Gain knob: Improves reception in strong signal areas.
17. Antenna socket: Connects antenna to the unit.
18. PA SP: Connects optional external 8-ohm, 4-watt speaker for use
as a public address system.
To prevent acoustic feedback, separate the microphone from the speaker when
operating the PA at high output levels.
19. EXT. SP: Connects an 8-ohm 4-watt speaker to remotely monitor
the receiver.
When the external speaker is plugged in, the internal speaker is off.
20. POWER: Connects DC power to transceiver.
21. Fuse.
ANL on/NB off
ANL off/NB on
ANL on/NB on
ANL off/NB off
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