The WTRCFV8-3400-4400-10-24-40-1 from Wainwright Instruments is a Tunable Filter with Frequency 3.4 to 4.4 GHz, Tunable Frequency 1000 MHz, Bandwidth 10 MHz, Rejection 40 dB, Insertion Loss 1.5 to 2.5 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCFV8-3400-4400-10-24-40-1 can be seen below.