The WLJE5-5-7.5-80-8000-1 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 5 / 7.5 MHz, Stopband Frequency Chosen Fco x 1.23 to 8 GHz, 3 dB Cutoff Frequency Choice of 5 to 7.5 MHz, Insertion Loss 0.7 to 1.2 dB, Rejection 80 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLJE5-5-7.5-80-8000-1 can be seen below.