Midland 5001Z 2 Way Radio with PA Function. 40Channel digital tuner locks accurately onto your selected channel. 4 Watt AM RF output power delivers maximum range communication with advanced technology to ensure crystal clear reception. Large LED Channel indicator makes it easy to see what channel you are tuned too. Illuminated SRF Meter measures the signal output strength. Instant access to emergency channel 9. RF gain adjusts reception sensitivity, range, for clear communication. Xtra Talk boosts microphone for improved voice clarity. Switchble noise blanker increases noise reduction. CBPA switch toggles between public address and normal CB operation. Squelch control eliminates unwanted background noise. External speaker and PA speaker jacks.