The WRCGV6-811.5-821.5-831.5-841.5-25-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 821.5 to 831.5 MHz, Bandwidth 10 MHz, Insertion Loss 0.65 to 0.75 dB, Rejection 25 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV6-811.5-821.5-831.5-841.5-25-1 can be seen below.