The WTBCJV4-5500-6000-20-240-50-4 from Wainwright Instruments is a Tunable Filter with Frequency 5.5 to 6 GHz, Tunable Frequency 500 MHz, Bandwidth 20 MHz, Rejection 50 dB, Insertion Loss 1.25 to 1.5 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTBCJV4-5500-6000-20-240-50-4 can be seen below.