The QY-1D50 from Clear Microwave, Inc is a 90 Degree Hybrid Coupler with Frequency 1 to 2 GHz, Average Power 50 W, Peak Power 3 kW, Insertion Loss 0.15 dB, Isolation 25 dB. Tags: Module with Connectors, Octave Band Coupler. More details for QY-1D50 can be seen below.