The QLF-5500-60 from Qualwave is a Low Pass RF Filter with Frequency DC to 5.5 GHz, Stopband Frequency 6 to 20 GHz, Insertion Loss 3 dB, Upper Rejection 60 dB @ 6 to 20 GHz, VSWR 2.00:1. Tags: Module with Connector. More details for QLF-5500-60 can be seen below.