The WBCTB3-2502.5-2532.5-2537.5-2567.5-40-1 from Wainwright Instruments is a Band Pass Filter with Frequency 2.5325 to 2.5375 GHz, Bandwidth 5 MHz, Center Frequency 2.535 GHz, Insertion Loss 1.25 to 1.75 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB3-2502.5-2532.5-2537.5-2567.5-40-1 can be seen below.