The DBDD1001004000C from Qotana is a Dual Directional Coupler with Coupling 8.5 to 21.5 dB, Frequency 1 to 40 GHz, Peak Power 0.5 kW, Average Power 30 W, Insertion Loss 2.5 to 5 dB. Tags: Module with Connectors. More details for DBDD1001004000C can be seen below.