The WRCGV8-813.5-821.5-831.5-839.5-50-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 821.5 to 831.5 MHz, Bandwidth 10 MHz, Insertion Loss 0.75 to 1.5 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV8-813.5-821.5-831.5-839.5-50-1 can be seen below.