The WRCT8-830.5-835.5-840.5-845.5-80 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 835.5 to 840.5 MHz, Bandwidth 5 MHz, Insertion Loss 0.6 to 1.5 dB, Rejection 80 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-830.5-835.5-840.5-845.5-80 can be seen below.