The WRCGV8-820-830-845-855-40-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 830 to 845 MHz, Bandwidth 15 MHz, Insertion Loss 0.75 to 1.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV8-820-830-845-855-40-1 can be seen below.