If you want to alert your fellow CBers to a lane lover or dream weaver up ahead, you need a reliable mic to get that message across. The Astatic 636L has a powerful noise-canceling system and a tailored frequency response system that provides maximum chatter power. Say over-and-out to wind or vehicle noise when you hit the airwaves with this reliable microphone that’s compatible with all four-pin CB radios, including, Cobra, Uniden and Galaxy models.