The WBCDB3-1618.5-1641-1646-1668.5-40 from Wainwright Instruments is a Band Pass Filter with Frequency 1.641 to 1.646 GHz, Bandwidth 5 MHz, Center Frequency 1.6435 GHz, Insertion Loss 0.8 to 1 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCDB3-1618.5-1641-1646-1668.5-40 can be seen below.