The WTBCJV4-2500-2800-20-180-40-5 from Wainwright Instruments is a Tunable Filter with Frequency 2.5 to 2.8 GHz, Tunable Frequency 300 MHz, Bandwidth 20 MHz, Rejection 40 dB, Insertion Loss 1 to 1.25 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTBCJV4-2500-2800-20-180-40-5 can be seen below.