The WTRCT8-859-894-15-30-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 859 to 894 MHz, Bandwidth 15 MHz, Insertion Loss 0.6 dB, Rejection 40 dB, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Notch Filter, Tunable Filter. More details for WTRCT8-859-894-15-30-40 can be seen below.