The WRCGV5-809.5-821.5-831.5-843.5-40-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 821.5 to 831.5 MHz, Bandwidth 10 MHz, Insertion Loss 0.5 to 1.25 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV5-809.5-821.5-831.5-843.5-40-2 can be seen below.