Zaxcom MicPlexer 3 - RF Filter and AmplifierMicPlexer 3 is a RF filter and amplifier offering enhanced frequency coverage, a 50 MHz tuning window, continuous 2 MHz step tuning, variable output level control, and RF overload indicators. RF Bandpass Filtering MicPlexer 3 features a completely overhauled bandpass filter that's continuously tunable, providing excellent RF rejection while preventing RF overload from walkie talkies and mobile devices that can cause intermodulation in the distribution