The WTRCJV8-5250-6000-5-30-40 from Wainwright Instruments is a Tunable Filter with Frequency 5.25 to 6 GHz, Tunable Frequency 750 MHz, Bandwidth 5 MHz, Rejection 40 dB, Insertion Loss 2 to 4 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCJV8-5250-6000-5-30-40 can be seen below.