The QLF-1000-70 from Qualwave is a Low Pass RF Filter with Frequency DC to 1 GHz, Stopband Frequency 1.3 to 4.2 GHz, Insertion Loss 1 to 1.5 dB, Upper Rejection 70 dB @ 1.3 to 4.2 GHz, Power 15 W. Tags: Module with Connector. More details for QLF-1000-70 can be seen below.