The WLJ10-1600-1800-60-6000-300 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 1.6 / 1.8 GHz, Stopband Frequency Chosen Fco x 1.24 to 6 GHz, 3 dB Cutoff Frequency Choice of 1.6 to 1.8 GHz, Insertion Loss 0.4 to 0.6 dB, Rejection 60 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLJ10-1600-1800-60-6000-300 can be seen below.