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Alexander Kendrick’s project consists of a low-frequency radio allowing a person to send text messages from almost 1,000 feet underground. Read his fascinating story on NPR.com. [via Slashdot]

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal nerdage.net


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Comments

  1. cde says:

    This type of invention is something Nasa needs to improve on immediately. Imagine having this on a Mars rover mission. Being able to relay data on Martian cave containents would be amazing. And since caves allow the rover to keep clear of dust issues, even longer science time. (Personally, the caves have the best chance of hiding something interesting)

  2. George M. Ewinbg says:

    This is interesting, BUT there’s no real information about the radio…What is the frequency / wavelength? how much power? How heavy, what are battery requirements / lifetime? Receiver sensitivity, antenna requirements, noise figure, type of modulation, etc. etc.? Why texting instead of Morse, single sideband, or digital audio?

    if this is a MAKE article about a cave radio, why is their no actual info ABOUT the radio, except that it (sort of ) works? This is like reporting about the Wright brothers and saying, “these guys in Dayton have this thing made of cloth with two fans on it made of bicycle parts… supposed to really fly”

    Come on, guys, you can do better!

  3. gccradioscience says:

    I cannot find any project for this, I agree with George. Where is a DIY project for this? This needs to be a public domain electronics project for hobbyists and engineers to learn, take notes, improve skills and use this as a reference tool future projects. This is just showing the basics that to prove a theory that low radio frequencies can penetrate through the Earth and Sea.

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