The WLJ8-35-40-60-3000-100 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 35 / 40 MHz, Stopband Frequency Chosen Fco x 1.24 to 3 GHz, 3 dB Cutoff Frequency Choice of 35 to 40 MHz, Insertion Loss 0.95 to 1.4 dB, Rejection 60 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLJ8-35-40-60-3000-100 can be seen below.