Thread: Eric Dollard
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Old 07-10-2018, 03:05 PM
Marcus Neuhof Marcus Neuhof is offline
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Join Date: Nov 2012
Posts: 81
I hope everyone enjoyed the conference. Will someone post a writeup for those of us who could not attend?

For those of you who were watching the Thai cave rescule -- and Eric, if he is still at Aaron's and near a computer -- it is perhaps of interest that a telluric radio system was used to communicate with the team underground.

The system is called a Heyphone and all schematics and construction plans are available on the Internet:

HeyPhone Introduction
https://www.xray-mag.com/content/tha...-gnarly-diving

While the Heyphone is no longer in production, the Swiss make a digital version:
Base Unit
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