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From: ron@argus.UUCP (Ron DeBlock)
Newsgroups: comp.sys.atari.st
Subject: Re: rf shield in the cpu
Message-ID: <968@argus.UUCP>
Date: Wed, 22-Jul-87 15:36:39 EDT
Article-I.D.: argus.968
Posted: Wed Jul 22 15:36:39 1987
Date-Received: Fri, 24-Jul-87 06:10:23 EDT
References: <238UD138985@NDSUVM1> <791@atari.UUCP>
Organization: NJ Instit of Tech, Newark NJ
Lines: 42

In article <791@atari.UUCP>, apratt@atari.UUCP (Allan Pratt) writes:
> in article <238UD138985@NDSUVM1>, UD138985@NDSUVM1.BITNET says:
> >      
> > I was wondering if the RF shield could be left out to make
> > any more room inside, or will that mess up the electrical operation of
> > the machine?
> >                         Bob
> 
> Removing the RF shield is not recommended, because it is required to
> comply with FCC emissions requirements.  However, it does not affect the
> operation of the computer itself.  If you remove the shield, you AND
> YOUR NEIGHBORS might get interference on your TV's, and you will
> certainly not be able to use your AM radio.  I don't know about ham, CB,
> or other radios. 
> 
> /----------------------------------------------\
> | Opinions expressed above do not necessarily  |  -- Allan Pratt, Atari Corp.
> | reflect those of Atari Corp. or anyone else. |     ...lll-lcc!atari!apratt
> \----------------------------------------------/	(APRATT on GEnie)

It MAY interfere with the operation of the computer, if a transmitter is
nearby.  Legal ham radio power levels (probably CB, too) can disturb
electronic equipment, including digital equipment.  It makes sense if
you think about it: there are suddenly some weird signals on the bus
(any conductor can be an antenna) and the machine gets very confused.

Remember: if RF can get out, it can also get in!  And vice versa.  Leaky
RF can cause some very bizzarre problems in modern high-speed digital
equipment.

"The ozone overflows with Radio Waves." - Roger Waters



{filler}




-- 
Ron DeBlock	KA2IKT
	uucp: ...!siesmo!rugters!galaxy!andromeda!argus!ron