The D4008HB003080 from Fujian MIcable is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1.1 dB, Frequency 0.3 to 8 GHz, Peak Power 3000 W, Average Power 400 W. Tags: Module with Connectors. More details for D4008HB003080 can be seen below.