Interesting. I can see why it's so important, I had always knew that but wasn't aware of it's capabilities of use etc.
Depending on the band you use, you can get hops of several thousand miles. On the shortwave bands, it used to be easy to receive Propaganda Havana here in Ohio, even with an out of tune tube set from the 50s.
huh I know how different frequencies are able to either travel longer or penetrate (gay) more objects but I didn't know they would keep enough information from so far.
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