The QHK-4R-23G from Crane Aerospace & Electronics is a 90 Degree Hybrid Coupler with Frequency 6 to 40 GHz, Average Power 1 W, Insertion Loss 1.6 dB, Isolation 13 dB, Coupling -3 dB. Tags: Module with Connectors. More details for QHK-4R-23G can be seen below.