President Electronics Johnny III USA Ham CB Radio AM Transceiver, 40 Channels AM, Channel Rotary Switch, Weather Alert, Volume Adjustment and ON/OFF, Multi-functions LCD DisplayKey Features40 channels AMChannel rotary switchWeather AlertVolume adjustment and ON/OFFManual squelch and ASC (Automatic Squelch Control)Multi-functions LCD displayS-meterVox function (Hands free)ANL filter and HI-CUTRF GainScanPriority channel memoryF function keyBeep FunctionRoger BeepKey lockingFront microphone plugExternal loudspeaker jackSpecificationsNumber of channels: 40Channel selector: rotaryNumber of weather channels: 7Frequency ranges: 26.965 MHz to 27.405 MHzWeather channels: 162.400 MHz to 162.550 MHzAntenna impedance: 50 ohmsWeather alert: YesVolume: Volume adjustment and ON/OFFSquelch: Manual squelchASC: YesDisplay: LCD multifonctionS-meter: DigitalPublic address: YesVox: YesFilter ANL: YesFilter HI-CUT: YesRF-Gain: YesScan: YesMemorie(s): 1F/Menu function key: YesBeep Function: YesRoger beep: YesKey locking: Yesmicrophone plug: front (6 pins)External Vox microphone jack: YesExternal loudspeaker jack: YesPower Supply: 13.8 V / 27.6 VSize (WxDxH): 4.92" x 1.77" x 5.91" / 125 mm x 45 mm x 150 mmWeight: ~ 1.54 lbs / ~ 0.7 kg