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Article #118

Re: 386/486 clock (1x or 2x)?

#118
From: Robert A. Fowler
Date: Mon, 27 Jul 1992 21:09
25 lines
1923 bytes
In article <92209.140137REE700A@MAINE.MAINE.EDU> <REE700A@MAINE.MAINE.EDU> writes:

>It probably has little or no impact on RF interference and only a slight 
>psychological ecffect on the dope at the FCC that licences it (Hey, this is 
>a computer, not an FM transmitter!) since many mainframes and workstations 
>have CPU clocks of 100 - 200 MHz. (covers most of the TV VHF, UHF and cable 
>TV bands, better stop that trend,too).

BUT most mainframes are class C (industrial) FCC rating, while pc's are 
class B (residental) which is much more stringent, remeber the FCC reps (
with radio DF equipment) at COMDEX the first year there were 386-33s?  
First day 10-20 vendors had motherboards in "FCC Aproved" boxes, second day 
only Everex(?) had a machine running.
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Message-ID: <RFowler.302@kelvin.jpl.nasa.gov>
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!mips!sdd.hp.com!elroy.jpl.nasa.gov!insctrl.jpl.nasa.gov!RFowler
References: <RFowler.288@kelvin.jpl.nasa.gov> <3713@svin02.info.win.tue.nl> <92209.140137REE700A@MAINE.MAINE.EDU>

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From: RFowler@kelvin.jpl.nasa.gov (Robert A. Fowler)
Subject: Re: 386/486 clock (1x or 2x)?
Message-ID: <RFowler.302@kelvin.jpl.nasa.gov>
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References: <RFowler.288@kelvin.jpl.nasa.gov> <3713@svin02.info.win.tue.nl> <92209.140137REE700A@MAINE.MAINE.EDU>
Date: Mon, 27 Jul 1992 21:09:28 GMT
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