The WTBCGV6-1700-2100-20-90-50-51 from Wainwright Instruments is a Tunable Filter with Frequency 1.7 to 2.1 GHz, Bandwidth 20 MHz, Rejection 50 dB, Insertion Loss 2 to 2.5 dB, Operating Temperature 15 to 45 Degrees C. Tags: Module with Connectors, Mechanically Controlled. More details for WTBCGV6-1700-2100-20-90-50-51 can be seen below.