The CSDZ-5H-1.9G SQ from Crane Aerospace & Electronics is a Space Qualified Coupler with Frequency 1.7 to 2 GHz, Frequency Sensitivity ±0.05 dB, Coupling 4.9 dB, Coupling Variation ±0.2 dB, Power 200 W. Tags: Surface Mount. More details for CSDZ-5H-1.9G SQ can be seen below.