Install the app
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
near vertical incidence skywave propagation
Help Support Doomsday Prepper Forums:
Military HF Radio Communications and Near Vertical Incidence Skywave Propagation (NVIS)
I found this helpful to explain about NVIS.
Aug 24, 2015
military radio communications
Amateur (Ham) Radio & Communication