The CDM-30-2.185G SQ from Crane Aerospace & Electronics is a Dual Directional Coupler with Coupling 30 dB, Coupling Variation ±1.25 dB, Frequency 2170 to 2200 MHz, Average Power 20 W (CW), Insertion Loss 0.4 dB. Tags: Module with Connectors. More details for CDM-30-2.185G SQ can be seen below.