The WBCGV4-816.5-846.5-861.5-891.5-30 from Wainwright Instruments is a Band Pass Filter with Frequency 846.5 to 861.5 MHz, Bandwidth 15 MHz, Center Frequency 854 MHz, Insertion Loss 0.65 to 0.75 dB, Rejection 30 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCGV4-816.5-846.5-861.5-891.5-30 can be seen below.