The DBDD3500900900C from Qotana is a Dual Directional Coupler with Coupling 34 to 36 dB, Frequency 900 MHz to 9 GHz, Peak Power 3 kW, Average Power 250 W, Insertion Loss 0.2 to 0.5 dB. Tags: Module with Connectors. More details for DBDD3500900900C can be seen below.