The QS-17D25 from Clear Microwave, Inc is a 90 Degree Hybrid Coupler with Frequency 8 to 26.5 GHz, Average Power 50 W, Peak Power 3 kW, Insertion Loss 0.9 dB, Isolation 16 dB. Tags: Module with Connectors, Multi-Octave Band Coupler. More details for QS-17D25 can be seen below.