The WTRCT8-670-1000-20-40-40M-42 from Wainwright Instruments is a Tunable Filter with Frequency 0.67 to 1 GHz, Tunable Frequency 330 MHz, Bandwidth 20 MHz, Rejection 40 dB, Insertion Loss 0.6 to 1 dB. Tags: Module with Connectors, Digitally Controlled. More details for WTRCT8-670-1000-20-40-40M-42 can be seen below.