The WTRCT8-840-1000-7-12-40-2 from Wainwright Instruments is a Tunable Filter with Frequency 0.84 to 1 GHz, Bandwidth 7 MHz, Rejection 40 dB, Insertion Loss 0.6 to 1.25 dB, Operating Temperature 15 to 45 Degrees C. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCT8-840-1000-7-12-40-2 can be seen below.