The RFDC2G18G30 from RF-Lambda is a Directional Coupler with Frequency 2 to 18 GHz, Coupling 29 to 31 dB, Frequency Sensitivity ±1 dB, Directivity 12 to 14 dB, Average Power 50 W. Tags: Module with Connectors. More details for RFDC2G18G30 can be seen below.