Near Vertical Incidence Skywave Propagation
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).
Near Vertical Incidence Skywave Propagation is an effective form of HF communication for stations in a 100 - 300 mile range. Ideal for Emcomm, the emergency communicator should be familiar with the use of NVIS antennas and propagation. Support Ham Radio Q&A by shopping at Amazon: http://amzn.to/2kO6LH7 Read my blog: http://www.jpole-antenna.com Colophon: Camera - Panasonic GH4: https://amzn.to/2GV2Og1 Lens - Panasonic 12-35 f2.8: https://amzn.to/2GWC5zU Microphone: Azden Pro-XD wireless lav: https://amzn.to/2qt3vDc Music by license: http://www.premiumbeats.com #NVIS #EMCOMM #ARESRACES
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Aloha es 73 de Russ (KH6JRM).