The LDDC-6/-18-40N-500w-1 from Leader-MW is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1 dB, Frequency 6 to 18 GHz, Peak Power 2500 W, Average Power 350 to 500 W. Tags: Module with Connectors. More details for LDDC-6/-18-40N-500w-1 can be seen below.