The QY-12D00 from Clear Microwave, Inc is a 90 Degree Hybrid Coupler with Frequency 8 to 16 GHz, Average Power 50 W, Peak Power 3 kW, Insertion Loss 0.45 dB, Isolation 18 dB. Tags: Module with Connectors, Octave Band Coupler. More details for QY-12D00 can be seen below.