The CSM-20-15G SQ from Crane Aerospace & Electronics is a Space Qualified Coupler with Frequency 12.4 to 18 GHz, Frequency Sensitivity ±0.5 dB, Coupling 20 dB, Coupling Variation ±1.25 dB, Power 10 W. Tags: Module with Connectors. More details for CSM-20-15G SQ can be seen below.