The WRCT8-830-832.5-837.5-840-50-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 832.5 to 837.5 MHz, Bandwidth 5 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 WRCT8-830-832.5-837.5-840-50-1 can be seen below.