The QLF-26000-30 from Qualwave is a Low Pass RF Filter with Frequency DC to 26 GHz, Stopband Frequency 28 GHz, Insertion Loss 1.5 dB, Upper Rejection 30 dB @ 28 GHz, VSWR 1.70:1. Tags: Module with Connector. More details for QLF-26000-30 can be seen below.