3 ms·

There's a couple of different "wake up" signals that can reach deeper into water. Their biggest limitation is very low bandwidth, so an attack sub will emerge (

There's a couple of different "wake up" signals that can reach deeper into water. Their biggest limitation is very low bandwidth, so an attack sub will emerge (/send up a buoy on a tether) to get an updated tactical map. https://hackaday.com/2020/07/15/the-many-methods-of-communicating-with-submarines/ https://hackaday.com/2020/07/15/the-many-methods-of-communic... https://en.wikipedia.org/wiki/Communication_with_submarines https://en.wikipedia.org/wiki/Communication_with_submarines

ethbr0 3y ago
Also highlighting the E-6B Mercury (and the upcoming EC-130J), which among other communication options has a 5-mile (!) VLF antenna it deploys vertically in midair (!!) to establish limited-bandwidth communications with submarines. https://m.youtube.com/watch?v=en-qekZX4ws https://m.youtube.com/watch?v=en-qekZX4ws But I believe that's only good down to ~60 ft. Anything deeper requires the really long land-based ELF arrays.
deleted 3y ago
[deleted]