The WTRCT5-840-1000-5-10-35-21 from Wainwright Instruments is a Tunable Filter with Frequency 0.84 to 1 GHz, Tunable Frequency 160 MHz, Bandwidth 5 MHz, Rejection 35 dB, Insertion Loss 0.5 to 1.5 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCT5-840-1000-5-10-35-21 can be seen below.