The WTRCT5-865-867-0.2-1.6-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 865 to 867 MHz, Bandwidth 0.2 MHz, Insertion Loss 0.5 dB, Rejection 50 dB, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Notch Filter, Tunable Filter. More details for WTRCT5-865-867-0.2-1.6-50 can be seen below.