The QHK-4R-26.7G SQ from Crane Aerospace & Electronics is a 90 Degree Hybrid Coupler with Frequency 26.2 to 27.2 GHz, Average Power 1 W, Insertion Loss 1.5 dB, Isolation 14 dB, Coupling -3 dB. Tags: Module with Connectors. More details for QHK-4R-26.7G SQ can be seen below.