A low-budget test earlier this year demonstrated long-range electric power transmission at frequencies and distances that could be used in an operational space solar power (SSP) system. Longtime SSP advocate John Mankins used less than $1 million put up by Discovery Communications Inc., plus a lot of volunteer labor by students from Texas A&M and Japan’s Kobe University, to collect solar energy at high elevation on the Hawaiian island of Maui and beam it as microwaves to a receiver ...

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