Propagation — How your signal travels.
The whole reason band conditions matter. Signals bounce off the ionosphere, and how well they bounce depends on the sun.
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Related words
- K index — How disturbed the earth's magnetic field is.
- FT8 — A weak-signal digital mode.
- Solar flux — A number that tracks solar activity.
- CTCSS / PL tone — A sub-audible tone that opens a repeater.
- Offset — The gap between transmit and receive frequency.
- Sporadic E — Sudden short-lived openings.
- SSB — Single Sideband. HF voice.
- Gray line — The band of twilight moving around the earth.