The WBCTB3-853.5-863.5-867.5-877.5-40 from Wainwright Instruments is a Band Pass Filter with Frequency 863.5 to 867.5 MHz, Bandwidth 4 MHz, Center Frequency 865.5 MHz, Insertion Loss 1.25 to 2 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB3-853.5-863.5-867.5-877.5-40 can be seen below.