It would be interesting to find out if any of this holds true. Do you own
the equipment to perform such an experiment?
-jtiner
----- Original Message -----
From: <wchast@utilpart.com>
To: <slug@nks.net>
Sent: Monday, December 23, 2002 5:40 PM
Subject: RE: [SLUG] Mobile mp3 player?
> 300 baud packets in the spectrum region between
> about 28Mhz and 54Mhz, I think that the wiring
> in most vehicles turns out to be nice 1/4 wave
> lengths in that region, so you get good pick up
> when a packet radio system in a vehicle happens
> to send a few packets, when it is within a few
> car lengths of the meganoise vehicle. The front
> end of the amp effectively becomes a mixer and
> extracts a crude reproduction of the packet wave
> form and sends it to the amp which does what it
> was designed to do, amplify it and ship it off
> to the speakers, which get it as high as the amp
> can deliver it, and the result is a loud 150Hz
> roar just prior to the speakers giving out.
>
> The fix is of course good shielding and grounding
> of the audio wiring, but I suspect that most of
> these car audio shops do not know much about shields
> or grounds, so getting rid of maganoise rap music
> pest (the most common form of meganoise heard
> around here) is not so hard to do. If you have
> properly grounded and shielded all the cabling,
> nothing should happen.
>
> I can even hear it with higher speed mobile data
> equipment that is in the VHF and UHF region, and
> running 1200 baud and up, and at those frequencies
> most gear is only running from 15-30 watts, that
> tells me the installation is substandard.
>
> There is one somewhere in my area that I can hear
> going down the road at times from 4-5 blocks away.
> I am just waiting for a chance to try it on him.
>
> To me that is no different than someone going down
> the street leaning on their horn, besides I wonder
> what kind of damage it is doing to the ears, brain
> and whatever else is being subjected to that level
> of audio inside a closed chamber.
>
> > -----Original Message-----
> > From: Josh Tiner - DI Radio [mailto:jtiner@tampabay.rr.com]
> > Sent: Monday, December 23, 2002 12:37 PM
> > To: slug@nks.net
> > Subject: Re: [SLUG] Mobile mp3 player?
> >
> >
> > Run that one by me again and tell me what it does...
> >
> > -jtiner
> >
>
>
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