The WLK10-60-70-60-6000-20 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 60 / 70 MHz, Stopband Frequency Chosen Fco x 1.155 to 6 GHz, 3 dB Cutoff Frequency Choice of 60 to 70 MHz, Insertion Loss 1.35 to 2.1 dB, Rejection 60 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLK10-60-70-60-6000-20 can be seen below.