3 ms·
> It's extremely hard to communicate long distance underwater, especially to do so discreetly. How does existing submarine cable infrastructure carry communica
by robocat 2y ago
> It's extremely hard to communicate long distance underwater, especially to do so discreetly.
How does existing submarine cable infrastructure carry communications to subs?
Low-frequency AC current in the shield, data picked up magnetically?
- 0_____0 2y agoELF https://en.m.wikipedia.org/wiki/Extremely_low_frequency https://en.m.wikipedia.org/wiki/Extremely_low_frequency
- hwillis 2y agoSound waves. Acoustic waves travel much farther and there are transmitting stations underwater. Contrary to the other reply, ELF is not used and is impractical: https://en.wikipedia.org/wiki/Project_Sanguine https://en.wikipedia.org/wiki/Project_Sanguine For VLF you can drag a very long antenna behind you, but most submarines just launch a buoy with a normal antenna to the surface and a fiber connection to allow them to stay below the surface. https://www.navalnews.com/naval-news/2022/04/communication-antenna-a-key-system-of-modern-submarines/ https://www.navalnews.com/naval-news/2022/04/communication-a...
- 0_____0 2y agoI did notice the bit in the Wikipedia article where they mention the US station isn't used for submarine comms anymore. Thanks for the higher quality info.