The WBCTB3-2157.5-2187.5-2192.5-2222.5-40 from Wainwright Instruments is a Band Pass Filter with Frequency 2.1875 to 2.1925 GHz, Bandwidth 5 MHz, Center Frequency 2.19 GHz, Insertion Loss 1.25 to 1.75 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB3-2157.5-2187.5-2192.5-2222.5-40 can be seen below.