The RFDC2G8G20 from RF-Lambda is a Directional Coupler with Frequency 2 to 8 GHz, Coupling 19 to 21 dB, Frequency Sensitivity ±0.7 to ±1 dB, Directivity 20 to 22 dB, Average Power 50 W. Tags: Module with Connectors. More details for RFDC2G8G20 can be seen below.