How To Make A Crystal Radio - Off-Grid

How To Make A Crystal Radio

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How To Make A Crystal Radioimage © Badseed – Wikipedia – lic. under CC-BY-SA-3.0

A crystal radio is a radio that only uses the power of the radio waves picked up by the antenna to generate the sound heard in the head phones. It gets its name from its most important component; a crystal detector originally made from a piece of crystalline mineral. Crystal radios are the simplest type of radio receiver and can be made with few inexpensive materials that can be found around your house. This video shows how to make a crystal radio made almost entirely from found items except for the diode and the earpiece.



Did you know that crystal radios were the first wireless devices? At the turn of the 20th century, an American scientist with the splendid name of Greenleaf Whittier Pickard, found out that a number of naturally occurring crystalline minerals could be used to detect radio signals. The crystal rock is fixed into a brass cup and the radio operator found the loudest signal by touching the wire, called a cat’s whisker, to various points on the surface of the crystal.

Crystal radios are distinct from ordinary radios as they don’t have a source of electricity power such as a battery or the mains power to amplify the weak radio signal to make it louder. In other words, there are no batteries, no transistors or amplifiers of any kind and the sounds are produced solely by the energy of the filtered radio wave. As a result, the sounds generated from them are weaker and they can only receive stations within a limited range.

If a grid down situation occurs, it will disable the electricity in the area so building a radio that doesn’t rely on batteries or power could give you an advantage. Surely, there will be some people who will use the airwaves to keep people in the loop and may be able to offer help.

Ok, here’s the video:


I Can't Help Showing This Off

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Lost Ways Of Survival Video

An amazing discovery in an abandoned house in Austin, Texas: A lost book of amazing survival knowledge, believed to have been long vanished to history, has been found in a dusty drawer in the house which belonged to a guy named Claude Davis.

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We've lost to history so much survival knowledge that we've become clueless compared to what our great grandfathers did or built on a daily basis to sustain their families.

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What REALLY Happens When You Bury a Shipping Container? (Hint: It's A Bit Crazy...)

Shipping containers are all the rage - but if you are thinking about buying one, you MUST watch this video first:

shipping container video

There's a general belief that if you bury a shipping container you can create an awesome root cellar / storm shelter / survival bunker.

But is a shipping container strong enough to handle the pressure?

Watch the video to see what happens:

What Really Happens When You Bury a Shipping Container? (Click To Watch Video)





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