The EDC500S3000C20B from ECHO Microwave is a Directional Coupler with Frequency 500 MHz to 3 GHz, Coupling 1.5 to 20 dB, Directivity 20 dB, Power 100 W, Average Power 100 W. Tags: Module with Connectors. More details for EDC500S3000C20B can be seen below.