5 votes

How do Radio Regulations and Frequency Allocations Apply to an Ionosonde?

Some googling for "ionosonde operation" reveals some applications (for example) to the FCC to operate under 47 C.F.R. §§ 5.3(c) and (e) which details that "Stations operating in the ...
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2 votes

Where can I find the official definition of ITU Zones?

Here. This is, I expect, what you want. https://g7vjr.org/2019/08/google-earth-kmz-files-for-cq-zones-and-itu-zones/

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