The WTRCFV8-3300-3700-20-40-50 from Wainwright Instruments is a Tunable Filter with Frequency 3.3 to 3.7 GHz, Bandwidth 20 MHz, Rejection 50 dB, Insertion Loss 1.5 to 2.5 dB, Operating Temperature 15 to 45 Degrees C. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCFV8-3300-3700-20-40-50 can be seen below.