Where can I get a powerful 14 MHz radio wave generator, and what can contain the waves?

I need a somewhat powerful 14 MHZ radio wave generator. I know that these frequencies are probably illegal, so what can best contain them? I have heard that Faraday Cages can, and a parabolic reflector has also ocurred to me. What would be best to contain them, and is it possible to build one?

sort by: active | newest | oldest
A 20 meter amateur radio transmitter will get you in the 14MHz region. I'll leave it to you to search one out and determine if it is within your needs. You could also try to find plans for a homebrew rig. You will also need to buy or construct a suitable antenna for transmitting the energy within your enclosure.

A metal enclosure will contain the energy. It could be wire mesh or sheet metal, but you will need to ensure it is well constructed to avoid any leakage. This is a "Farady Cage".

The amateur radio rig requires a license to broadcast, but if your shielded enclosure is well constructed, little or no RF should leak out. I don't know if it is legal to transmitt inside a shielded enclosure without a license, but if all your energy is contained, you wouldn't interfere with any licensed users. At any rate, getting an amateur license is pretty easy these days, as the morse code requirements are gone.

A parabolic reflector for these wavelenghts would be massive, and would only serve to concentrate your power in a specific direction anyway.

Details on your application might help for further advice.
Delox4 years ago
if someone have the circuits of radio waves 14 megahertz and 200 watts power send me please,
Kiteman6 years ago
I've got to ask - why do you want to generate a powerful radio signal, yet contain in within a structure?
Technicolor (author)  Kiteman6 years ago
I want to reproduce an effect that was discovered not too long ago. Here is a link to the article in Popular Science:


I know that the radio waves I am generating are probably illegal to release into the open air because they would disrupt the other waves in the air, so I want to contain them so I don't get in trouble.

I want a powerful signal because I'm sure that the more powerful the signal is, the more hydrogen and oxygen it will liberate.

Thanks for your help.

I think that's going to be very inefficient, given the power required to generate the signal.

However, I'm pretty sure I've seen this done using focussed sunlight and a catalyst.
Technicolor (author)  Kiteman5 years ago
Do you recall where you have seen it done with sunlight?

It was a BBC "documentary" by James May, something about the future.