The WTBCTV5-1800-1900-10-35-40-2 from Wainwright Instruments is a Tunable Filter with Frequency 1.8 to 1.9 GHz, Tunable Frequency 100 MHz, Bandwidth 10 MHz, Rejection 40 dB, Insertion Loss 2.75 to 3 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTBCTV5-1800-1900-10-35-40-2 can be seen below.