Extreme Low-Tech Communication


This has to be the ultimate achievement in low-powered long-distance communication. Ham radio operator Michael Rainey, AA1TJ, transmitted a message over a distance of over 1,000 miles by yelling Morse code with his own voice into this primitive home-made transmitter, nicknamed “El Silbo.” No power was used other than that generated by his own voice vibrating the microphone (which was a re-purposed speaker).

If you want to build your own here’s the circuit schematic and more details.

And here’s Rainey, back in 2009, using El Silbo:

On a side note, can we please apply Ham radio’s level of detail and open source spirit to the world of backyard vegetable gardening?

Saturday Linkages: Bitters, Dogs and Native Plants

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What our hometown looked like in the 1920s.

We Only Bond with Complex Landscapes | Garden Rant http://gardenrant.com/2013/12/we-only-bond-with-complex-landscapes.html …

How To Make Homemade Bitters Cooking Lessons from The Kitchn http://www.thekitchn.com/how-to-make-homemade-bitters-cooking-lessons-from-the-kitchn-197883 …

100 Years of Dog Breed “Improvement” http://wp.me/p1VSYl-eg 

Los Angeles Was Once a Forest of Oil Derricks http://southland.gizmodo.com/los-angeles-was-once-a-forest-of-oil-derricks-1469825345 …

Full-color handout for plant-based eating. Tips for food, nutrition, shopping. http://truelovehealth.com/2013/12/04/how-to-eat-more-plant-based-meals-handout-now-available/ ….

Eagle Rock backyard yields fresh fruit and food for the hungry http://www.theeastsiderla.com/2013/12/eagle-rock-backyard-yields-fresh-fruit-and-food-for-the-hungry/ …

Native plants: restoring an idea–http://www.patternliteracy.com/116-native-plants-restoring-to-an-idea …

In the U.S., recycling is often pigeonholed as… – Unconsumption http://disq.us/8gf2so 

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