The WTBCJV8-3000-4000-150-310-40-2 from Wainwright Instruments is a Tunable Filter with Frequency 3 to 4 GHz, Tunable Frequency 1000 MHz, Bandwidth 150 MHz, Rejection 40 dB, Insertion Loss 1.5 to 2 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTBCJV8-3000-4000-150-310-40-2 can be seen below.