The WRCT8-835.9-836.4-836.6-837.1-30-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 836.4 to 836.6 MHz, Bandwidth 0.2 MHz, Insertion Loss 0.6 to 2 dB, Rejection 30 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-835.9-836.4-836.6-837.1-30-1 can be seen below.