The MDC6228-20 from Preferred Power Products (P3) is a Dual Directional Coupler with Coupling 20 dB, Coupling Variation ±1.0 dB, Frequency 12.4 to 18 GHz, Peak Power 1 kW, Average Power 50 W. Tags: Module with Connectors. More details for MDC6228-20 can be seen below.