The WLD9-50-150-60-600-1500 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 50 / 150 MHz, Stopband Frequency Chosen Fco x 1.26 to 600 MHz, 3 dB Cutoff Frequency Choice of 50 to 150 MHz, Insertion Loss 0.4 to 0.5 dB, Rejection 60 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLD9-50-150-60-600-1500 can be seen below.