Question T1A07
From subelement T1 - T1A
What is the FCC Part 97 definition of a space station?
Why is this correct?
The correct answer is C because Part 97 specifically defines a space station as 'an amateur station located more than 50 km above Earth's surface.' This precise altitude threshold distinguishes amateur space stations from terrestrial stations. Options A and B are wrong because they refer to any satellite or only manned satellites, not amateur radio stations specifically. Option D incorrectly describes ground stations using satellites for relay, not the space stations themselves.
Memory tip
Look for exact regulatory definitions rather than logical assumptions. FCC rules use precise technical criteria (like the 50 km altitude) rather than general descriptions. When you see altitude-specific thresholds in amateur radio, they're usually the key distinguishing factor in the definition.
Learn more
The 50 km threshold represents the Kármán line boundary between Earth's atmosphere and space. Amateur space stations include satellites, the International Space Station when operating amateur equipment, and any amateur station above this altitude. This definition enables frequency privileges and emission standards specific to space operations, different from terrestrial amateur stations operating under standard Part 97 rules.
Think about it
Why do you think the FCC chose 50 km as the defining altitude for space stations rather than using terms like 'satellite' or 'orbiting station'?