The WTBCGV5-750-850-10-50-40-2 from Wainwright Instruments is a Tunable Filter with Frequency 0.75 to 0.85 GHz, Bandwidth 10 MHz, Rejection 40 dB, Insertion Loss 1.5 to 2 dB, Operating Temperature 15 to 45 Degrees C. Tags: Module with Connectors, Mechanically Controlled. More details for WTBCGV5-750-850-10-50-40-2 can be seen below.