The WTBCT5-670-970-10-40-40-21 from Wainwright Instruments is a Tunable Filter with Frequency 0.67 to 0.97 GHz, Bandwidth 10 MHz, Rejection 40 dB, Insertion Loss 2.5 to 3 dB, Operating Temperature 15 to 45 Degrees C. Tags: Module with Connectors, Mechanically Controlled. More details for WTBCT5-670-970-10-40-40-21 can be seen below.