The WTRCTW8-670-1000-0.2-1.2-40-31 from Wainwright Instruments is a Tunable Filter with Frequency 0.67 to 1 GHz, Tunable Frequency 330 MHz, Bandwidth 0.2 MHz, Rejection 40 dB, Insertion Loss 0.6 to 2.75 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCTW8-670-1000-0.2-1.2-40-31 can be seen below.