The QLF-3000-50 from Qualwave is a Low Pass RF Filter with Frequency DC to 3 GHz, Stopband Frequency 3.45 to 7 GHz, Insertion Loss 1 dB, Upper Rejection 50 dB @ 3.45 to 7 GHz, VSWR 1.50:1. Tags: Module with Connector. More details for QLF-3000-50 can be seen below.