[sdiy] Truly spaced-out noise

[Oren Leavitt]

I've read about people using standard broadcast FM receivers, the type 
with a signal strength meter, tuned where there is no station, to count 
'meteors' during meteor showers.
Each time a meteorite hits the atmoshere, a burst of RF energy would 
register on the FM signal strength meter.

Oren

jeff brown wrote:

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>>VC radio receiver would me a dream come true for me!  just the other day i
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>found this:
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>>http://www.aoc.nrao.edu/~pharden/hobby/Ahobby.html
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>>anybody ever done something along these lines?  even AM band would be
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>great--would this approach to voltage controlled capacitance work in a basic
>am receiver?  should i start looking for my old crystal set?
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>A heterodyne type receiver using a VCO (albeit a high frequency one) will do
>it. I'm sure there are schematics on the web...
>
>An AM Short Wave receiver tuned to an unused band (somewhere between 20 and
>21 MHz used to work, IIRC) is a good source of noise, but is also a good way
>of detecting lightning strikes and periodic emissions from Jupiter (I'm NOT
>making this up - it's been used by professional and amateur radio
>astronomers),
>not to mention sources of man-made noise.
>
>Jeff Brown
>www.guitarfool.com
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>>>----- ------- Original Message ------- -----
>>>From: np at inverse-entertainment.de
>>>To: synth-diy at dropmix.xs4all.nl
>>>Sent: Fri, 25 Jun 2004 20:23:36
>>>
>>>synth at oldmail.charlielamm.com wrote:
>>>
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>>>>I was wondering if any DIYer has used a FM tuner
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>>>or AM tuner as a noise
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>>>>source.  I believe there are fairly monolithic
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>>>IC's to do this so it could
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>>>>possibly be done with low parts count (or, you
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>>>could plug your home stereo
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>>>>into your synth, tuned between stations, but that
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>>>might be a bit
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>>>>inelegant?)
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>>>Funny.. Half an hour ago I thought about a voltage
>>>controlled shortwave
>>>reciever myself. On shortwave you'll receive the
>>>strangest stations, and
>>>also the most interesting noise artifacts.,.. It
>>>would be a one trick
>>>pony of a module, but a very cool one..
>>>
>>> Nils
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>>>
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-- 
Oren Leavitt
oleavitt at ix.netcom.com