The WBCDB3-1517-1539.5-1544.5-1567-40 from Wainwright Instruments is a Band Pass Filter with Frequency 1.5395 to 1.5445 GHz, Bandwidth 5 MHz, Center Frequency 1.542 GHz, Insertion Loss 0.8 to 1 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCDB3-1517-1539.5-1544.5-1567-40 can be seen below.