Spectrum

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Here are the frequency allocations in all of their glory, available from here. It’s interesting that the U.S. government auctions off spectrum for mobile carriers, who then pass this cost back on to the very people who “own” it. But wait, there are some frequencies that you can use gratis, even commercially. It just so happens, though, they don’t go through walls well. Can you find this needle in the haystack?

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