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
- CTCSS / PL tone — A sub-audible tone that opens a repeater.
- Gray line — The band of twilight moving around the earth.
- Solar flux — A number that tracks solar activity.
- APRS — Automatic Packet Reporting System.
- K index — How disturbed the earth's magnetic field is.
- Offset — The gap between transmit and receive frequency.
- Frequency — How fast a radio wave oscillates.
- SSTV — Slow-Scan Television.