The AFL-03000 from Atlantic Microwave is a Low Pass RF Filter with Frequency DC - 2.7 GHz, Stopband Frequency 3.45 - 8 GHz, 3 dB Cutoff Frequency 3 GHz, Insertion Loss 1 dB, Rejection 50 dB at 3.45 - 8 GHz. Tags: Module with Connector. More details for AFL-03000 can be seen below.