The QLF-3200-40 from Qualwave is a Low Pass RF Filter with Frequency DC to 3.2 GHz, Stopband Frequency 3.8 to 18 GHz, Insertion Loss 1 dB, Upper Rejection 40 dB @ 3.8 to 18 GHz, VSWR 1.50:1. Tags: Module with Connector. More details for QLF-3200-40 can be seen below.