The RFDDC5M06G20 from RF-Lambda is a Dual Directional Coupler with Coupling 19 to 21 dB, Frequency 0.5 to 6 GHz, Peak Power 500 W, Average Power 50 W, Insertion Loss 0.6 to 1.2 dB. Tags: Module with Connectors. More details for RFDDC5M06G20 can be seen below.