this post was submitted on 16 Nov 2024
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Shortwave "Discone" Antenna, Former AT&T High Seas Radio Transmitter Site, Ocean Gate, NJ, 2009.

All the pixels, none of the per-minute toll charges, at https://www.flickr.com/photos/mattblaze/4141766569

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[–] mattblaze@federate.social 2 points 6 months ago* (last edited 6 months ago) (27 children)

Ships on the high seas still occasionally make some use of shortwave radio, but its importance has greatly diminished over the last few decades. The Coast Guard still maintains a "watch" on emergency shortwave frequencies, listening for distress calls, but most transoceanic ships are now equipped with more modern, higher-bandwidth satellite communications systems.

[–] mattblaze@federate.social 1 points 6 months ago (26 children)

These places are what the Internet looked like a century ago.

[–] mattblaze@federate.social 1 points 6 months ago (24 children)

I should note that while the site had a number of discone antennas like this one, they were mostly there as backups in case the main antennas (including truly massive wire rhombics pointing toward various oceanic regions) or transmitter combiners failed. The old Bell System did not mess around.

[–] jbaggs@infosec.exchange 1 points 6 months ago

@mattblaze@federate.social It makes sense they'd use something more omnidirectional / lower gain, and broad spectrum for backups.

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