Webinar | November 22, 2023

Understanding Near Vertical Incidence Skywave (NVIS)

Rohde - NVIS dipole

Near Vertical Incidence Skywave, NVIS, offers significant advantages over traditional HF skywave or groundwave communications, particularly for military, disaster-relief, and other ad hoc scenarios.

This short presentation starts with a review of the HF propagation theory, then introduces the fundamental concepts behind NVIS and both the strengths and weaknesses of NVIS-based HF communications. Particular attention is given to the differences between NVIS and low-angle HF skywave antennas and the various methods of implementing NVIS using different antenna types, such as horizontal dipoles or loop antennas.


Paul Denisowski
Product Management Engineer
Rohde & Schwarz North America

Paul Denisowski is a Product Management Engineer at Rohde & Schwarz, with over 20 years of both lab and field experience in test and measurement. Paul has authored numerous whitepapers, presentations, videos and webinars on a wide variety of topics, including interference hunting, direction finding, EMC, amplifiers, and general radio frequency applications. Paul holds a Master's degree in Electrical Engineering from North Carolina State University and was also a visiting lecturer at the Tokyo Institute of Technology. Paul is also an active amateur radio operator (KO4LZ) and holds DXCC, WAS, and VUCC.

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