The WTRCT10-1844.9-1879.9-15-30-80 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.84 to 1.88 GHz, Bandwidth 15 MHz, Insertion Loss 1.25 dB, Rejection 80 dB, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Notch Filter, Tunable Filter. More details for WTRCT10-1844.9-1879.9-15-30-80 can be seen below.