The WRCGV6-812.5-821.5-831.5-840.5-35-3 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 1 dB, Rejection 35 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV6-812.5-821.5-831.5-840.5-35-3 can be seen below.