Stefan Sperling#osmodevcon talk "Doing long distance digital links using the HF radio band" by https://www.rhizomatica.org/ just ended.
Simply put, it blew my mind.
You think you've ever seen a large antenna? Think again...
Video recording should show up soon at https://media.ccc.de/c/osmodevcon2019
Recommended :flan_thumbs:
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