Near Vertical Incidence Skywave Propagation
If you need reliable region-wide HF communications, please consider a Near Vertical Incidence Skywave Antenna.
In this video from Michael Martens (KB9VBR), we get an excellent introduction to NVIS and the antennas that can fulfill this role.
NVIS HF antennas are perfect for regional and statewide emergency communications, providing strong signals up to almost 300 miles (480 km).
If you can't see the video, please insert this title URL into your browser: https://www.youtube.com/watch?v=fvZ7z-6wAy0
Here are some comments from Michael (KB9VBR).