The LDDC-1/3-40N from Leader-MW is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1 dB, Frequency 1 to 3 GHz, Average Power 200 W, Insertion Loss 0.3 to 0.4 dB. Tags: Module with Connectors. More details for LDDC-1/3-40N can be seen below.