The WRCGV12-817.5-827.5-847.5-857.5-70 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 827.5 to 847.5 MHz, Bandwidth 20 MHz, Insertion Loss 1.25 to 2 dB, Rejection 70 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV12-817.5-827.5-847.5-857.5-70 can be seen below.