The WLK5-1500-2000-60-8000-20 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 1.5 / 2 GHz, Stopband Frequency Chosen Fco x 1.57 to 8 GHz, 3 dB Cutoff Frequency Choice of 1.5 to 2 GHz, Insertion Loss 0.3 to 0.4 dB, Rejection 60 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLK5-1500-2000-60-8000-20 can be seen below.