The QLF-2250-40 from Qualwave is a Low Pass RF Filter with Frequency DC to 2.25 GHz, Stopband Frequency DC to 2.25 GHz, Insertion Loss 0.51 to 0.82 dB, Upper Rejection 40 dB @ 3 to 5 GHz, Power 10 W. Tags: Module with Connector. More details for QLF-2250-40 can be seen below.