The WRCGV6-811.5-817.5-827.5-833.5-25 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 817.5 to 827.5 MHz, Bandwidth 10 MHz, Insertion Loss 0.65 to 1 dB, Rejection 25 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV6-811.5-817.5-827.5-833.5-25 can be seen below.