The WLKE3-25-225-60-8000-1 from Wainwright Instruments is a Low Pass RF Filter with Frequency DC to 25 / 225 MHz, Stopband Frequency Chosen Fco x 1.5 to 8 GHz, 3 dB Cutoff Frequency Choice of 25 to 225 MHz, Insertion Loss 0.5 to 0.7 dB, Rejection 60 dB. Tags: Module with Connector, Lumped Component Filter, Chebyshev Filter. More details for WLKE3-25-225-60-8000-1 can be seen below.