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I suspect the opposite. Solar activity opens paths in bands that otherwise won't DX. So while some or all of HF might close VHF and the lower end of UHF can o
by topspin 4y ago
I suspect the opposite. Solar activity opens paths in bands that otherwise won't DX. So while some or all of HF might close VHF and the lower end of UHF can open and do amazing things.
Aside from amateur radio this would also impact naval and aeronautical radio traffic, both civil and military. Alternatives are usually available (the vulnerability of HF to solar activity is built into the structure of such systems) so it's not a crisis, but it can interfere with people and sometimes a little interference is all it takes to mess things up.
- lsllc 4y agoI believe DX in this context means "long distance".
- Enginerrrd 4y agoYeah, more specifically, it usually is referring to radio signal propagating using some form of bounce off the ionosphere. Usually only relatively lower frequencies do this (these are unfortunately named "HF" for high frequency). The more the earth is bombarded by charged particles, the less transparent the ionosphere is to radio signals, so the more likely you are to get a bounce from higher frequencies.