The WLK10-700-1000-60-6000-20 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 700 MHz / 1 GHz, Stopband Frequency Chosen Fco x 1.155 to 6 GHz, 3 dB Cutoff Frequency Choice of 700 MHz to 1 GHz, Insertion Loss 0.7 to 1.2 dB, Rejection 60 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLK10-700-1000-60-6000-20 can be seen below.