The QHDZ-2Z-1.9G SQ from Crane Aerospace & Electronics is a 90 Degree Hybrid Coupler with Frequency 1.7 to 2 GHz, Average Power 25 W, Insertion Loss 0.3 dB, Isolation 20 dB, Coupling -3 dB. Tags: Surface Mount. More details for QHDZ-2Z-1.9G SQ can be seen below.