Uniden BC-880FM Owner's Manual

813. Frequency Display: Displays the MHz of the selected channel. Alsodisplays menu options.14. ANL/NB: Turns ANL (Automatic Noise Limiter) and NB (NoiseBlanker) features on and off. ANL reduces external noise and NBreduces interference from vehicle ignition systems. Press ANL/NBto turn ANL and NB on or off in the following configurations:From ANL OFF/NB OFFPress once. ANL on/NB offPress twice. ANL off/NB onPress three times. ANL on/NB onPress four times. ANL off/NB off15. AM/FM: Change AM/FM modulation. Press AM/FM to togglebetween 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 18 1920212217. Antenna socket: Connects antenna to the unit.18. PA SP: Connects optional external 8-ohm, 4-watt speaker for useas a public address system.To prevent acoustic feedback, separate the microphone from the speaker whenoperating the PA at high output levels.19. EXT. SP: Connects an 8-ohm 4-watt speaker to remotely monitorthe receiver.When the external speaker is plugged in, the internal speaker is off.20. POWER: Connects DC power to transceiver.21. Fuse.