The WTBCT5-791-821-10-40-40 from Wainwright Instruments is a Band Pass Filter with Frequency 791 to 821 MHz, Bandwidth 10 MHz, Insertion Loss 2.5 dB, Rejection 40 dB @ 1800 MHz, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Tunable Filter. More details for WTBCT5-791-821-10-40-40 can be seen below.