What changed

Glossary — edited Sep 5, 2026 by NARA Master Administrator

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Compared with the version from Aug 31, 2026. Note: Approved suggestion: AM

+ **AM** — amplitude modulation, where the strength of the carrier carries the voice. Still used on 10 m and above, and what aircraft use.

**Amateur / ham** — a licensed operator in the amateur radio service.

**ATV** — amateur television.

56 unchanged lines

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