The WTRCT10-2110-2530-5-8-40-11 from Wainwright Instruments is a Tunable Filter with Frequency 2.11 to 2.53 GHz, Tunable Frequency 420 MHz, Bandwidth 5 MHz, Rejection 40 dB, Insertion Loss 1.25 to 4 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCT10-2110-2530-5-8-40-11 can be seen below.