The WTRCD5-1700-1900-0.4-2.4-40-1 from Wainwright Instruments is a Tunable Filter with Frequency 1.7 to 1.9 GHz, Tunable Frequency 200 MHz, Bandwidth 0.4 MHz, Rejection 40 dB, Insertion Loss 0.75 to 3 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCD5-1700-1900-0.4-2.4-40-1 can be seen below.