The WTRCFV8-3410-3590-20-40-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 3.41 to 3.59 GHz, Bandwidth 20 MHz, Insertion Loss 1.5 dB, Rejection 50 dB, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Notch Filter, Tunable Filter. More details for WTRCFV8-3410-3590-20-40-50 can be seen below.