The WTRCT10-2570-2870-15-30-40M-3 from Wainwright Instruments is a Tunable Filter with Frequency 2.57 to 2.87 GHz, Tunable Frequency 300 MHz, Bandwidth 15 MHz, Rejection 40 dB, Insertion Loss 1.25 to 2 dB. Tags: Module with Connectors, Digitally Controlled. More details for WTRCT10-2570-2870-15-30-40M-3 can be seen below.