The AFL-17000 from Atlantic Microwave is a Low Pass RF Filter with Frequency DC - 15.3 GHz, Stopband Frequency 19.6 - 22 GHz, 3 dB Cutoff Frequency 17 GHz, Insertion Loss 1 dB, Rejection 50 dB at 19.6 - 22 GHz. Tags: Module with Connector. More details for AFL-17000 can be seen below.