The QLF-480-30 from Qualwave is a Low Pass RF Filter with Frequency DC to 0.48 GHz, Stopband Frequency 0.53 to 3 GHz, Insertion Loss 3 dB, Upper Rejection 30 dB @ 0.53 to 3 GHz, VSWR 1.50:1. Tags: Module with Connector. More details for QLF-480-30 can be seen below.