The WTRCT10-2110-2530-10-20-40-9 from Wainwright Instruments is a Tunable Filter with Frequency 2.11 to 2.53 GHz, Tunable Frequency 420 MHz, Bandwidth 10 MHz, Rejection 40 dB, Insertion Loss 1.25 to 1.5 dB. Tags: Module with Connectors, Mechanically Controlled. More details for WTRCT10-2110-2530-10-20-40-9 can be seen below.