The ZDC10S-12.4-18-30A from ZTS Technologies is a Directional Coupler with Frequency 12.4 to 18 GHz, Coupling 10 dB, Coupling Variation ±1 dB, Directivity 12 dB, Average Power 30 Watts. Tags: Module with Connectors. More details for ZDC10S-12.4-18-30A can be seen below.