The QY-6D00 from Clear Microwave, Inc is a 90 Degree Hybrid Coupler with Frequency 4 to 8 GHz, Average Power 50 W, Peak Power 3 kW, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Module with Connectors, Octave Band Coupler. More details for QY-6D00 can be seen below.