The WBCDB3-437-456-459-478-50 from Wainwright Instruments is a Band Pass Filter with Frequency 456 to 459 MHz, Bandwidth 3 MHz, Center Frequency 457.5 MHz, Insertion Loss 0.5 to 0.6 dB, Rejection 50 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCDB3-437-456-459-478-50 can be seen below.