The AFL-02000 from Atlantic Microwave is a Low Pass RF Filter with Frequency DC - 1.8 GHz, Stopband Frequency 2.3 - 6 GHz, 3 dB Cutoff Frequency 2 GHz, Insertion Loss 1 dB, Rejection 50 dB at 2.3 - 6 GHz. Tags: Module with Connector. More details for AFL-02000 can be seen below.