submitted 3 days ago by vk6flab@lemmy.radio to c/amateur_radio@lemmy.radio

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[-] BlueEther@no.lastname.nz 3 points 3 days ago

I knew the words, but had to look up the meaning in context.

TIL about ionospheric cooling between 2000-2024

[-] vk6flab@lemmy.radio 2 points 3 days ago

Tomorrow my weekly podcast goes into how this map is created. It's quite the journey.

this post was submitted on 11 Sep 2026

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