The WLKE5-80-175-80-8000-1 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 80 / 175 MHz, Stopband Frequency Chosen Fco x 1.23 to 8 GHz, 3 dB Cutoff Frequency Choice of 80 to 175 MHz, Insertion Loss 0.8 to 1.6 dB, Rejection 80 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLKE5-80-175-80-8000-1 can be seen below.