FT8 — A weak-signal digital mode.
Your computer sends and decodes short structured messages. It works when signals are far too weak for voice, and it now accounts for a huge share of all HF activity.
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Related words
- Simplex vs duplex — One frequency versus two.
- Offset — The gap between transmit and receive frequency.
- Frequency — How fast a radio wave oscillates.
- Gray line — The band of twilight moving around the earth.
- Ionosphere — The layer that bounces HF signals back to earth.
- Watts — Transmit power.
- Propagation — How your signal travels.
- RTTY — Radio Teletype.