The QV-4D50 from Clear Microwave, Inc is a 90 Degree Hybrid Coupler with Frequency 1 to 8 GHz, Average Power 50 W, Peak Power 3 kW, Insertion Loss 0.7 dB, Isolation 18 dB. Tags: Module with Connectors, Multi-Octave Band Coupler. More details for QV-4D50 can be seen below.