this post was submitted on 14 Jan 2025
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Photography

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AT&T Long Lines "Oak Hill Tower", San Jose, CA, 2021.

All the pixels, none of the RF exposure, at https://www.flickr.com/photos/mattblaze/51261791084

#photography

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[–] [email protected] 1 points 1 month ago (12 children)

Captured with the Rodenstock 50mm/4.0 HR Digaron-W lens (@ f/4.5) on a Cambo WRS-1600 camera (with about 15mm of vertical shift to preserve the geometry), the Phase One IQ4-150 back (@ ISO 50) in dual exposure mode (which preserves a couple stops of additional dynamic range into the shadows).

The tower's shape is irregular; it tapers slightly.

The wide angle and panoramic orientation give a bit of context, alone on a hill (which is being rapidly encroached by adjacent residential development).

[–] [email protected] 1 points 1 month ago (11 children)

For much of the 20th century, the backbone of the AT&T "Long Lines" long distance telephone network consisted primarily of terrestrial microwave links (rather than copper or fiber cables). Towers with 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, of a unique design.

[–] [email protected] 1 points 1 month ago (1 children)

@[email protected] here is a toot about a very technical video tour of the shack at the bottom of one of these sites. The video host is very well informed and does a GREAT job at commenting the visit, with a description of everything

https://chaos.social/@f4grx/113826985021478406

The batteries are impressive, among other things.

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