The LDDC-2/4-6S from Leader-MW is a Dual Directional Coupler with Coupling 6 dB, Coupling Variation ±1.25 dB, Frequency 2 to 40 GHz, Average Power 50 W, Insertion Loss 0.7 dB. Tags: Module with Connectors. More details for LDDC-2/4-6S can be seen below.