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Matt Blaze /
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2024-01-01 20:15:28
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Matt Blaze on Nostr: For much of the 20th century, the backbone of the AT&T "Long Lines" long distance ...

For much of the 20th century, the backbone of the AT&T "Long Lines" long distance network consisted primarily of terrestrial microwave links rather than copper or fiber cables. Towers with the distinctive KS-15676 "horn" antennas could be seen on hilltops and atop switching center buildings across the US; they were simply part of the American landscape.

Most of the relay towers were simple steel structures. This brutalist concrete platform in San Jose was, I believe, a unique design.
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