The WRCT8-851.375-852.875-854.125-855.625-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 852.875 to 854.125 MHz, Bandwidth 1.25 MHz, Insertion Loss 0.6 to 1.5 dB, Rejection 50 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-851.375-852.875-854.125-855.625-50 can be seen below.