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... I don't think 50k is a viable satellite surrogate. It's still pretty low.
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Think of it as a 50k' tall antenna. It will increase the distance to the horizon from 3.8 miles at 6 feet, to 301 miles. It's a minute fraction of the cost of a satellite, or UAV with the same payload and altitude, it can be retrieved to maintain and upgrade the payload, and it doesn't require a pilot. It can be scaled up or down to carry just about any payload, and that payload can cover 284,631.5 square miles.
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“War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." John Stuart Mill
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