The CDM-30-.5G SQ from Crane Aerospace & Electronics is a Space Qualified Coupler with Frequency 390 to 610 MHz, Frequency Sensitivity ±0.8 dB, Coupling 30 dB, Coupling Variation ±1.25 dB, Power 5 W. Tags: Module with Connectors. More details for CDM-30-.5G SQ can be seen below.