Below the Noise Floor — Episode 1: What HF Radio Actually Is

High frequency radio has been talking to the other side of the planet for over a hundred years. No servers, no cell towers, no infrastructure - just a transmitter, an antenna, and the ionosphere. This first episode covers what HF radio actually is, how skywave propagation works, the amateur license structure, and how software-defined radio has changed what is possible. Plus: a preview of the AetherSDR series coming next.

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This episode is 10 minutes long.

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This episode was published on May 24, 2026.

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