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Toroid - novel winding?

Posted: Sat Jul 06, 2024 9:29 am
by KX4QC
Just came across this picture that appears to show a large toroid with two heavy-gauge windings, but look carefully...
Both windings seem to be two turns, and end blindly.
Why would pne make or need such a device?
Here's the pic:
Screenshot from 2024-06-21 22-06-25.jpg


Any ideas?