The WRCGV10-820-827.5-847.5-855-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 827.5 to 847.5 MHz, Bandwidth 20 MHz, Insertion Loss 1 to 1.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV10-820-827.5-847.5-855-40 can be seen below.