The CSDZ-10H-0.9G SQ from Crane Aerospace & Electronics is a Directional Coupler with Frequency 800 to 1000 MHz, Coupling 10 dB, Coupling Variation ±0.6 dB, Frequency Sensitivity ±0.15 dB, Directivity 23 dB. Tags: Surface Mount. More details for CSDZ-10H-0.9G SQ can be seen below.