Adjustable ASQ: An innovation in the CB segment is the adjustable squelch (ASQ) offers maximum comfort even for the most demanding users of CB radios. So far, we have used to activate/deactivate ASQ, now the PNI brings its tuning function, allows the removal of up to 100% interference, background noise from CB band. ASQ button on the microphone. For increased comfort while driving, PNI has positioned the automatic squelch (ASQ) on/off button on the microphone. In addition to this button, we also find the microphone up/down buttons to change the channels, so you no longer have to take your eyes off the road to operate these main functions. Small size: You can use this CB radio in any car as it is one of the smallest CB radios on the market. Sturdy and well-shaped design, it can be placed anywhere: armrest, board, between chairs without disturbing anyone. PNI Escort HP 8000L key lock switch has a switch on the front plate, which allows you to select the emergency channel (19), normal mode (CH) and key lock (L). The last one is a useful function in situations when you want to avoid accidental touch of buttons on the station.Technical data: Band: AM/FM channels: 40 Frequency: 26.965 - 27.405 MHz Microphone 6 pins Audio distortion: Power: 4 W Modulation: FM: 3KHz ± 0.2KHz, AM: 85-90% mains Voltage: 12V Energy consumption: 2A. Dimensions / weight: 115 x 36 x 152 mm / 0.8 kg. Main functions: ASQ lock. Adjustable ASQ emergency call channels. External speaker connection on the back