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Comment by jareklupinski | Hacker News Reader

I hope this will open the possiblity of handheld Very-Low Frequency communication devices

Imagine being able to text someone directly, antenna to antenna, over distances of hundreds of KM

The bandwidth wouldn't be great, but it would be nice to send a simple text SMS to someone without any relays in between

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VLF would also go through rock and water? Could be useful for spelunking (and submarine comms). Depends on if they can transmit without a huge antenna as well.

Could the rock not be the antenna? Distract the sandworm style

"...without huge antenna..."

That would be reinventing James Harris Rogers WW-I system.

T.E.Bearden claimed that this system has been rediscovered and "lost" several times.

http://www.rexresearch.com/rogers/1rogers.htm

> Impossible to read Arlington on the elevated antenna on account of static interference. United Fruit Co station of New Orleans interfered with signals from Arlington on main antenna, but offered no interference on underground antenna... [Missing Text ]

that's an interesting footnote...

There is some obscure evidence that submarine communications are being carried out by what can be considered Extended Electrodynamics.

Check out the list of Curl-Free Magnetic Vector Potential patents by Raymond C. Gelinas assigned to Honeywell.

That's already possible with a high sensitivity magnetometer.

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