The RFDC5M06G20 from RF-Lambda is a Directional Coupler with Frequency 500 MHz to 6 GHz, Coupling 19 to 21 dB, Frequency Sensitivity ±0.5 to ±0.7 dB, Directivity 18 dB, Average Power 50 W. Tags: Module with Connectors. More details for RFDC5M06G20 can be seen below.