What changed
Glossary — edited Sep 5, 2026 by NARA Master Administrator
Compared with the version from Sep 5, 2026. Note: Approved suggestion: ARES
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**AMSAT** — the Radio Amateur Satellite Corporation, which builds and supports amateur satellites; see [satellites](/wiki/operating/satellites).
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**ARES** — the Amateur Radio Emergency Service, ARRL-sponsored, where hams register with a local emergency coordinator to serve served agencies.
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**ATV** — amateur television.
**Balun / unun** — transformer between balanced and unbalanced (or unbalanced and unbalanced) feeds.
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