The WBCTB8-2300-2305-2315-2320-40 from Wainwright Instruments is a Band Pass Filter with Frequency 2.305 to 2.315 GHz, Bandwidth 10 MHz, Center Frequency 2.31 GHz, Insertion Loss 2.25 to 3.25 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB8-2300-2305-2315-2320-40 can be seen below.