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Beacon
Downlink from a spacecraft that immediately indicates the state of the spacecraft as being one of several possible states by virtue of the presence and/or frequency of the subcarrier. See Chapter 10. Bel - Unit of ratio equal to ten decibels. Named in honour of telecommunications pioneer Alexander Graham Bell.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Aerospace
- Category: Space flight
- Company: NASA
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