RST — The signal report system.
Readability, Strength, and Tone. On voice you only give the first two numbers, because tone applies only to Morse code. "Five nine" means perfectly readable and very strong.
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Related words
- ARRL — The national association for amateur radio in the US.
- Mobile — Operating from a vehicle.
- Field Day — The biggest weekend in amateur radio.
- Portable — Operating away from home.
- DX — Distance. A far-away station.
- Simplex — Radio to radio, no repeater.
- CQ — Calling anyone who is listening.
- Pileup — Everybody calling one station at once.