The CSC-5-1.54G SQ from Crane Aerospace & Electronics is a Space Qualified Coupler with Frequency 1.525 to 1.559 GHz, Frequency Sensitivity ±0.25 dB, Coupling 5 dB, Coupling Variation ±1 dB, Power 40 W. Tags: Module with Connectors. More details for CSC-5-1.54G SQ can be seen below.