Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request
From: quack!mrapple@uop.uop.edu (Nick Sayer)
Newsgroups: comp.dcom.telecom
Subject: Re: Cellular/Cordless Phones in Computer Room
Message-ID: <9971@accuvax.nwu.edu>
Date: 20 Jul 90 17:54:48 GMT
Sender: news@accuvax.nwu.edu
Organization: The Duck Pond, Stockton, CA
Lines: 24
Approved: Telecom@eecs.nwu.edu
X-Submissions-To: telecom@eecs.nwu.edu
X-Administrivia-To: telecom-request@eecs.nwu.edu
X-Telecom-Digest: Volume 10, Issue 502, Message 7 of 15


PMW1@psuvm.psu.edu (Peter M. Weiss) writes:

>Please relate your experiences in using either cellular or cordless
>phones in a computer room, especially as it relates to any EMI that
>affected the operation of a computing or electronic media device.

I have a Sun 2/170 in my living room and a cordless phone. The
"magnetic media devices" I use are built like an aircraft carrier and
are pretty immune to RF (as an example, my 300 MB hard disk weighs 165
lbs [70 kg or so]). However, depending on your location, it's nearly
impossible to talk on the cordless when its within about six feet of the
Sun. Computers use lots of square waves rich in harmonics.  Really
yucky.

Can't comment on cellular. I am a Ham, and the highest frequency I
deal with on a regular basis is 162.995 MHz. Everything from there
down gets trashed pretty good unless you use an outdoor antenna (which
is forbidden in my #&^@&#@^#*^*@!! condo complex) or cable (catv/cafm).


Nick Sayer 
quack!mrapple@uop.edu 
209-952-5347 (Telebit)