The AFL-13000 from Atlantic Microwave is a Low Pass RF Filter with Frequency DC - 11.7 GHz, Stopband Frequency 15 - 18.8 GHz, 3 dB Cutoff Frequency 13 GHz, Insertion Loss 1 dB, Rejection 50 dB at 15 - 18.8 GHz. Tags: Module with Connector. More details for AFL-13000 can be seen below.