The 778D Dual Directional Coupler is ideal for swept-frequency reflectometer testing of broadband coaxial components. The unit covers 100MHz to 2GHz. High directivity and close tracking of the auxiliary arms are featured. The unit can handle 50 W average power and peak power of 500 W. 20 dB nominal coupling Primary line connector: Type-N(M/F) Auxiliary arms connectors: Type-N(F/F)