The WBCDB3-705.8-721-724-739.2-50-2 from Wainwright Instruments is a Band Pass Filter with Frequency 721 to 724 MHz, Bandwidth 3 MHz, Center Frequency 722.5 MHz, Insertion Loss 1 to 1.25 dB, Rejection 50 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCDB3-705.8-721-724-739.2-50-2 can be seen below.