The WVR-773B-30M-01 from Wevercomm is a Band Stop Filter with Stopband Frequency 758 to 788 MHz, Insertion Loss 1 dB, Rejection 30 dB, Power 40 W, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Notch Filter. More details for WVR-773B-30M-01 can be seen below.