The WBCGV6-821.5-831.5-841.5-851.5-50-1 from Wainwright Instruments is a Band Pass Filter with Frequency 831.5 to 841.5 MHz, Bandwidth 10 MHz, Center Frequency 836.5 MHz, Insertion Loss 1.25 to 2 dB, Rejection 50 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCGV6-821.5-831.5-841.5-851.5-50-1 can be seen below.