The WTRCT8-670-1000-10-20-40M-37 from Wainwright Instruments is a Tunable Filter with Frequency 0.67 to 1 GHz, Tunable Frequency 330 MHz, Bandwidth 10 MHz, Rejection 40 dB, Insertion Loss 0.6 to 1.25 dB. Tags: Module with Connectors, Digitally Controlled. More details for WTRCT8-670-1000-10-20-40M-37 can be seen below.