how to harnes the power of radio waves?

Question

i want to build a radio capable of powering itself using the radio waves it recieves
how can i harnes this power?

Answer 1

You will require a Germanium Crystal Diode, A coil of wire, A set of headphones and an Aerial.

Put them together and listen to the Radio without using your own power. If you want a diagram write to me and I will send you one.

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Answer 2

A crystal set is the only self powered method.
To get decent reception of distant stations you need a long aerial ,otherwise signal strength will be too feeble.Also there is only sufficient power to run high impedance headphones.
Lack of tuning selectivity between adjacent stations also a problem with so many transmitters on air.Some crystal sets are quite complex to minimise the above problems.Intercontinental Short wave transmissions can be received with shorter aerial.
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Answer 3

I made one when I was a kid.
All you need are:
Capacitor
Inductor
Diode - be carefull to choose one that that works at very low voltage
Sensitive headphones
Long wire
Patience!
You can only hear AM signals using this kind of setup and I recommend a variable capacitor to allow tuning. Go for a few MHz and there are loads of strong signals that you should be able to detect.
I am not going to go into details here but do a little research to do the sums to get the correct frequency band and it should work.
I spent ages winding loads of inductors until I made one that worked.

Answer 4

The crystal radios mentioned above are on the right track. Very weak signal, but audible with headphones/earphones.

Answer 5

Build a crystal set. You will need a diode, a set of high impedance headphones and a long-wire antenna. It will only work on local AM stations.

Answer 6

as a fashion to understand ways one ought to decipher the outline of section conjugation from 3 descriptive sciences.Linear optics,audio sciences,and Electro magnetic resonance.once you could detect innovations on the thanks to remove time both routinely or electrically you could make investments a small skill and receive a meditated or as termed in music 'the wolf tone'.again.Dissociated air made both Keely and Tesla's air ships fly.The down area is that it also operates the particle beam.commence examining now,earlier that's unavailable to you.

Answer 7

Look up tesla

it whuz his dream(amoungst others) to send energy thru tha air, elimin8ing wires... and it worked... sorta

but that man seriously knows 4rm electricity

Answer 8

Learn to spell harness.

Answer 9

find a crystal earphone...reason why it is called a crystal set.