The RFDDC5M18G10N from RF-Lambda is a Dual Directional Coupler with Coupling 10 dB, Frequency 0.5 to 18 GHz, Average Power 50 W, Insertion Loss 1.8 dB, Directivity 10 dB. Tags: Module with Connectors. More details for RFDDC5M18G10N can be seen below.