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Greyline or Grayline? (#1325)

David Casler Ask Dave141K subscribers

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Hand-picked by a BrighterTube curator · found via round-3 back catalogue of a channel Lumen picks video by video · 82% confidence

Explains the greyline propagation phenomenon and its use in radio communication. Teaches ionospheric propagation prediction and timing.

A 12-minute video from David Casler Ask Dave: “Greyline or Grayline? (#1325)”.

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Video by David Casler Ask Dave, played through YouTube's embedded player.