Interesting, this would be a problem for emergency communications set up to run on HF if it did indeed cause a total blackout. I know the VA out here uses HF fo

Interesting, this would be a problem for emergency communications set up to run on HF if it did indeed cause a total blackout. I know the VA out here uses HF for emergency communications in the event of a major disaster, I believe 80 meters. This would be a problem if a major earthquake killed propagation.