The CSM-10-12.1G SQ from Crane Aerospace & Electronics is a Space Qualified Coupler with Frequency 11.45 to 12.75 GHz, Frequency Sensitivity ±0.75 dB, Coupling 10 dB, Coupling Variation ±1 dB, Power 10 W. Tags: Module with Connectors. More details for CSM-10-12.1G SQ can be seen below.