The WTRCT5-863-870-0.2-1.2-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 863 to 870 MHz, Bandwidth 0.2 MHz, Insertion Loss 0.75 dB, Rejection 40 dB, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Notch Filter, Tunable Filter. More details for WTRCT5-863-870-0.2-1.2-40 can be seen below.