The QLF-15000-50 from Qualwave is a Low Pass RF Filter with Frequency DC to 15 GHz, Stopband Frequency 16 to 22.3 GHz, Insertion Loss 1 to 2.5 dB, Upper Rejection 50 dB @ 16 to 22.3 GHz, Power 15 W. Tags: Module with Connector. More details for QLF-15000-50 can be seen below.