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AN/FPS-24 Radar Tower, Mt. Umunhum, Los Gatos, CA, 2024.
Most of the pixels, none of the TV interference, at https://www.flickr.com/photos/mattblaze/53796724938
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this post was submitted on 29 Oct 2024
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Photography
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This is a stitched imaged made from two captures with the Rodenstock 70mm/5.6 HR-Digaron-W lens, Phase One IQ4-150 digital back (@ ISO 50), and a Cambo WRS 1250 camera, shifted left/right 15mm, producing a 230MP final image.
Note that the full resolution version isn't currently up on flickr due to a bug preventing the upload of very large images there. Currently a large (but reduced size, 100MP) version occupies a placeholder there.
From 1958 through 1980, this incongruous four story monolith was the centerpiece of the "Alameda Air Force Station", a long-range radar site that was part of NORAD's SAGE early warning system. The blast-hardened concrete building served as the platform for an FPS-24 radar system, a massive 120 foot wide reflector that emitted a 5 megawatt VHF pulse, continuously rotating at 5 RPM.
Notoriously, the signal disrupted TV and radio reception throughout the San Jose area.
@mattblaze@federate.social I'm reminded of the Russian Woodpecker that used to appear in short-wave bands back in the day (I had no idea what it was when I was a kid playing with a radio with a SW band).
https://en.wikipedia.org/wiki/Duga_radar
@stacey_campbell@aus.social yeah, the Duga site has long been on my list to visit, but that’s definitely impractical these days.