The DBDC2004000800C from Qotana is a Directional Coupler with Frequency 4 to 8 GHz, Coupling 19 to 21 dB, Frequency Sensitivity ±0.4 to 0.7 dB, Directivity 20 to 23 dB, Average Power 50 W. Tags: Module with Connectors. More details for DBDC2004000800C can be seen below.