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KNBR (AM 680) Antenna, Redwood City, CA, 2024
Very tall pixels at https://www.flickr.com/photos/mattblaze/54131419266
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this post was submitted on 13 Nov 2024
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Photography
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Also, important safety tip: you can get closer to this tower without clearly trespassing or jumping fences than any other 50KW broadcast antenna I've ever seen. I measured a field strength of over 80V/m a bit outside the antenna fence, which is an incredibly strong signal (though still within the OSHA limits at the frequency involved).
Resist any temptation to jump the fence and climb the (energized) tower. You'll be electrocuted as soon as you touch it.
@mattblaze@federate.social With towers over 200ft, the FAA requires lights on the top, and these towers can make the systems that power and monitor the lights act very funky. I never had the pleasure, but I worked with people who did.
@Zoarial94@infosec.exchange yeah, they make special tower light monitoring systems specifically for AM radio stations. Also, maintaining the lights is definitely a job I Do Not Want.
@mattblaze@federate.social I was remote lighting support for the field, and I loved it. The field techs, however, really have it rough.