The WLKE3-0.1-7.5-40-8000-0.01 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 0.1 / 7.5 MHz, Stopband Frequency Chosen Fco x 1.24 to 8 GHz, 3 dB Cutoff Frequency Choice of 0.1 to 7.5 MHz, Insertion Loss 0.5 to 0.7 dB, Rejection 40 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLKE3-0.1-7.5-40-8000-0.01 can be seen below.