The DBDC3000370600C from Qotana is a Directional Coupler with Frequency 375 MHz to 6 GHz, Coupling 28.5 to 31.5 dB, Frequency Sensitivity ±1 to 1.5 dB, Directivity 15 to 18 dB, Average Power 50 W. Tags: Module with Connectors. More details for DBDC3000370600C can be seen below.