The CSM-20-1.5G SQ from Crane Aerospace & Electronics is a Space Qualified Coupler with Frequency 1 to 2 GHz, Frequency Sensitivity ±0.8 dB, Coupling 20 dB, Coupling Variation ±1 dB, Power 5 W. Tags: Module with Connectors. More details for CSM-20-1.5G SQ can be seen below.