The CD1-12.4-20-30 from Analog Microwave Design is a Directional Coupler with Frequency 1 to 12.4 GHz, Coupling 20 dB, Directivity 15 dB, Average Power 30 W, Peak Power 250 W. Tags: Module with Connectors. More details for CD1-12.4-20-30 can be seen below.