The DBDC3002000400C from Qotana is a Directional Coupler with Frequency 2 to 4 GHz, Coupling 28.75 to 31.25 dB, Frequency Sensitivity ±0.75 dB, Directivity 22 to 24 dB, Average Power 50 W. Tags: Module with Connectors. More details for DBDC3002000400C can be seen below.