What is the FCC Part 97 definition of a space station?

The FCC defines a 'space station' in Part 97 specifically based on its altitude above the Earth. According to the rules, any amateur station located more than 50 kilometers (about 31 miles) above the Earth's surface is legally considered a space station. This definition applies strictly based on altitude, regardless of whether the station is manned (like the International Space Station) or unmanned (like a standard amateur satellite). Distractors mentioning 'any satellite' or 'manned satellite' are incorrect because they ignore the strict 50 km altitude threshold set by the rules.