The QHM-2-17.7G SQ from Crane Aerospace & Electronics is a 90 Degree Hybrid Coupler with Frequency 17.3 to 18.1 GHz, Average Power 5 W, Insertion Loss 0.7 dB, Isolation 16 dB, Coupling -3 dB. Tags: Module with Connectors. More details for QHM-2-17.7G SQ can be seen below.