The WBCTB3-914.5-917.5-921.5-924.5-20 from Wainwright Instruments is a Band Pass Filter with Frequency 917.5 to 921.5 MHz, Bandwidth 4 MHz, Center Frequency 919.5 MHz, Insertion Loss 1.25 to 2 dB, Rejection 20 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB3-914.5-917.5-921.5-924.5-20 can be seen below.