The WBCTB3-2100-2130-2135-2165-40-2 from Wainwright Instruments is a Band Pass Filter with Frequency 2.13 to 2.135 GHz, Bandwidth 5 MHz, Center Frequency 2.1325 GHz, Insertion Loss 1.25 to 1.75 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB3-2100-2130-2135-2165-40-2 can be seen below.