The QHM-2-450 SQ from Crane Aerospace & Electronics is a 90 Degree Hybrid Coupler with Frequency 400 to 500 MHz, Average Power 10 W, Insertion Loss 0.25 dB, Isolation 25 dB, Coupling -3 dB. Tags: Module with Connectors. More details for QHM-2-450 SQ can be seen below.