The CSM-20-8G SQ from Crane Aerospace & Electronics is a Space Qualified Coupler with Frequency 4 to 12.4 GHz, Frequency Sensitivity ±0.4 dB, Coupling 20 dB, Coupling Variation ±1 dB, Power 30 W. Tags: Module with Connectors. More details for CSM-20-8G SQ can be seen below.