The WTRCTW8-670-1000-0.2-1.6-50-23 from Wainwright Instruments is a Tunable Filter with Frequency 0.67 to 1 GHz, Tunable Frequency 330 MHz, Bandwidth 0.2 MHz, Rejection 50 dB, Insertion Loss 0.6 to 2.5 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCTW8-670-1000-0.2-1.6-50-23 can be seen below.