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Cave-Texting Device Involves Combination of Computer and Ham Radio:

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Teen Inventor's Cave Radio Could Save Lives Deep Underground: Science fair projects don't get much cooler than a texting device that broke the record for deepest underground digital communication in the United States. Such a device may help save people trapped deep underground and even allow scientists to conduct remote cave research, all thanks to a teen inventor from Los Alamos, New Mexico. NPR took a firsthand look at the deep, dark foray. Alexander Kendrick, 16, headed to Carlsbad Caverns National Park in New Mexico to test his device almost 1,000 feet underground. His invention involves a computer attached to a ham radio that transmits data using low-frequency radio waves. By contrast, high-frequency transmissions used in FM broadcasts have a harder time penetrating solid rock. Kendrick's team climbed down to 946 feet, before they assembled a 6-foot-wide radio antenna out of PVC tubing and wire. Kendrick's dad had hiked to a spot directly above the team on the surface and awaited a message.

Read more: eHam.net News


 
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