Understanding Near Vertical Incidence Skywave (NVIS)

Understanding NVIS video preview image

This webinar gives an overview of HF propagation, the technical principles underlying NVIS, the different types of antennas commonly used for NVIS operation, as well as the technical and operational aspects of NVIS

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Understanding HF Propagation

Understanding HF propagation

This video is an introduction to the fundamental concepts of HF propagation, with special emphasis placed on skywave propagation and the role of the ionosphere.

Rebirth of HF video preview

HF communications

Webinar: The Rebirth of HF

This webinar explains why the "lost art" of HF is not only still relevant, but has been making a comeback in recent years, particularly in the area of both local and global communications. A central topic of this presentation is why much of the rebirth of HF is due to advancements in a wide range of fields, such as antenna design and digital modulation schemes, as well improvements in our understanding of propagation and how we can adapt to the challenges of propagation at HF. In addition to these topics, this webinar discusses how the performance and capabilities of HF direction finding / radiolocation have been improved in recent years and why DF has become an important enabler of HF as a modern communications technology.

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