These band-pass filters help eliminate “out-of-band” signals that can saturate the front end of wireless microphone receivers. They can also greatly improve dynamic range by reducing noise and third-party interference outside the operating range.  

Each is fitted with industry-standard BNC-type connectors, requiring no power or user configuration and allowing easy connection to wireless microphone antennas to reduce noise and improve wireless system performance. 

Note, the maximum pass-through current is 420 mA. To avoid malfunction, make sure the pass-through current is less then 420 mA.