president johnny iii usa 40 channel cb radio 12 or 24v, black president electronics president electronics johnny iii usa cb radio am transceiver, 40 channels am, channel rotary switch, weather alert, volume adjustment and on/off, multi-functions lcd display, key features, 40 channels am, channel rotary switch, weather alert, volume adjustment and on/off, manual squelch and asc (automatic squelch control), multi-functions lcd display, s-meter, vox function (hands free), anl filter and hi-cut, rf gain, scan, priority channel memory, f function key, beep function, roger beep, key locking, front microphone plug, external loudspeaker jack. specifications: number of channels: 40. channel selector: rotary. number of weather channels: 7. frequency ranges: 26.965 mhz to 27.405 mhz. weather channels: 162.400 mhz to 162.550 mhz. antenna impedance: 50 ohms. weather alert: yes. volume: volume adjustment and on/off. squelch: manual squelch. asc: yes. display: lcd multifunction. s-meter: digital. public address: yes. vox: yes. filter anl: yes. filter hi-cut: yes. rf-gain: yes. scan: yes. memories: 1. f/menu function key: yes. beep function: yes. roger beep: yes. key locking: yes. microphone plug: front (6 pins). external vox microphone jack: yes. external loudspeaker jack: yes. power supply: 13.8 v / 27.6 v. size (w x d x h): 4.92" x 1.77" x 5.91" / 125 mm x 45 mm x 150 mm. weight: ~ 1.54 lbs. / ~ 0.7 kg.