The CDM-20-1.975G SQ from Crane Aerospace & Electronics is a Space Qualified Coupler with Frequency 1.65 to 2.3 GHz, Frequency Sensitivity ±0.8 dB, Coupling 20 dB, Coupling Variation ±1 dB, Power 5 W. Tags: Module with Connectors. More details for CDM-20-1.975G SQ can be seen below.