The CSC-30-12.23G SQ from Crane Aerospace & Electronics is a Space Qualified Coupler with Frequency 11.7 to 12.75 GHz, Frequency Sensitivity ±0.75 dB, Coupling 30 dB, Coupling Variation ±1.2 dB, Power 30 W. Tags: Module with Connectors. More details for CSC-30-12.23G SQ can be seen below.