From: Qua Veda <qua@oregon.com>
To: Loopers-Delight@loopers-delight.com
Sent: Fri, December 24, 2010 12:24:32 PM
Subject: Re: EME moonbounce?
The signal would be electrical and not audio, of course. and the very long wire would essentially act like a large resistor.
signal to noise might become a factor to deal with
this reminds me of folks who listen to lightning strikes (called 'whistlers' ) by attaching some sort of electrical device to long runs of wire fencing out in remote , northern plains areas.
lightning strikes around the world generate fluctuations in the magnetic fields that can be picked up my these very long 'antennas'
for a better source of info than my questionable memory... http://en.wikipedia.org/wiki/Whistler_(radio)-Qua
On Dec 24, 2010, at 3:28 AM, Rick Walker wrote:
> The problem with this idea from a practical standpoint
> is I think that any wire that would carry an audio signal is also
>
going to be an antennae.
>
> the reason why long runs of microphone cables always use balanced chords
> is to defeat this phenomenon.
>
> two wires are thrown out out of phase and the audio is only passed through
> one. consequently, any radio signals that come in through the wire
> will cancel each other out being 180 degrees out of phase with each other.
>
> Also, the spool would need to be unravelled because if it wasn't , then the sound
> you put into it would just transfer through all of it since it would be touching.
>
> You might find a highway construction site (if anyone is constructing hiways in
> the crumbling empire of the US these days) and catch them
> right as they are laying cables.
>
> You'd have to contact them officially as I imagine that it's illegal to be on site of
> such construction (due to
the huge amount of theft of wire from construction
> sites these days........copper is really, really valuable and thieves target new building
> sites constantly, making a lot of money if they get away
>
> Cool idea. I hope you can manifest it.
>
> Merry Christmas, Daryl. May 2011 be a fantastic year for your considerable
> talent and artistry.
>
> rick walker
>
>
> On 7/22/64 11:59 AM, Daryl Shawn wrote:
>> I always wondered if one could send a signal through a tremendously long wire, long enough that it would take the sound an appreciable length of time to arrive, thus creating a delay with relatively little loss of fidelity (though I'm sure there'd be a loss of gain, which would need to be made up, thus adding some noise to the end signal). Possible? Should I look around for a five-mile spool of speaker wire and try it out?
>>
>> I assume that the speed of the signal through the wire would not be limited to the speed of sound in open air, hence it would need to be quite a long length...
>>
>> Daryl Shawn
>>
www.swanwelder.com>>
>>
>>> OK, this might be totally technically naiive but with a time delay of around 2 seconds it IS possible to bounce radio signals offf the moon.
>>> Does anyone here know what sort of fidelity the resultant echo would be ? - you can see where I'm going with this...
>