Random source

Would the output from one of the websdr's out there be a valid source for randomness, or would I need an sdr to get one?

Would ELF/VLF region be a valid source (I have a ELF/VLF SDR)?

I want to see it.

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I have a ELF/VLF SDR

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White, pink, or brown? http://simplynoise.com/

I'd like to have a VLF SDR.

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Originally Posted by KG4CGC

I want to see it.

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http://www.g4ilo.com/uploaded_images/saqrx-728628.gif
http://www.g4ilo.com/uploaded_images...28.gif%3C/a%3E

Adding up to 44KHz is sound card dependent.

OK, you have to tell me what you're using.
:)

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Originally Posted by WØTKX

White, pink, or brown? http://simplynoise.com/

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I would think white noise would be the thing (Since it's power is equally distributed over the spectrum), but I need a constant source.

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Originally Posted by KG4CGC

OK, you have to tell me what you're using.
:)

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SAQ VLF Receiver + Sound card + Antenna connected to the mic-in port. The software's download link is busted, you you can use SpectrumLab to do the same thing.

All I can find on that is that you connect the ant to your soundcard and use some software. I did that sans software in 2002. Soundcard hasn't been the same since. Stuff I heard was anything on the grid based on what the neighbors were doing. Toasters and hair dryers are interesting. Some microwave ovens are really dirty. Yes, microwave ovens are broadbanded. Some are.

http://simplynoise.com/

http://www.random.org/audio-noise/

:dunno:

To create a random number generator you could also use a Geiger Counter and a small radioactive point source. An old radium watch dial, a piece of uranium ore, or a standard low level point source. In the probability lab we used this kit..

http://www.elexp.com/kit_2645.htm

along with an old radium clock face.