The WRCT8-851.535-852.885-854.115-855.465-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 852.885 to 854.115 MHz, Bandwidth 1.23 MHz, Insertion Loss 0.6 to 1.5 dB, Rejection 40 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-851.535-852.885-854.115-855.465-40 can be seen below.