The RFDC2G8G30 from RF-Lambda is a Directional Coupler with Frequency 2 to 8 GHz, Coupling 29 to 31 dB, Frequency Sensitivity ±0.5 to ±0.7 dB, Directivity 20 to 22 dB, Average Power 50 W. Tags: Module with Connectors. More details for RFDC2G8G30 can be seen below.