The WTRCTW10-1900-2700-10-20-40-21 from Wainwright Instruments is a Tunable Filter with Frequency 1.9 to 2.7 GHz, Tunable Frequency 800 MHz, Bandwidth 10 MHz, Rejection 40 dB, Insertion Loss 1.25 to 2 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCTW10-1900-2700-10-20-40-21 can be seen below.