The WLKE2-7.5-25-30-8000-1 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 7.5 / 25 MHz, Stopband Frequency Chosen Fco x 1.5 to 8 GHz, 3 dB Cutoff Frequency Choice of 7.5 to 25 MHz, Insertion Loss 0.4 to 0.6 dB, Rejection 30 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLKE2-7.5-25-30-8000-1 can be seen below.