The QDDC-1000-18000-K25 from Qualwave is a Dual Directional Coupler with Coupling 30 to 40 dB, Coupling Variation ±1.2 dB, Frequency 1000 to 18000 MHz, Peak Power 3000 W, Average Power 250 W. Tags: Module with Connectors. More details for QDDC-1000-18000-K25 can be seen below.