[time-nuts] time-nuts Digest, Vol 69, Issue 31

Bob Camp lists at rtty.us
Wed Apr 14 12:12:46 EDT 2010


Hi

I've found that in some cases you need to run multiple passes over multiple
days to degauss a badly mag'd monitor. I'm sure that at some point they do
indeed become "irreversible". So far I haven't found one that a hula hoop
sized coil won't eventually fix. 

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Chuck Harris
Sent: Wednesday, April 14, 2010 8:15 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] time-nuts Digest, Vol 69, Issue 31

Dave Baxter wrote:

> I think you'll find that any stray fields from industrial shaker
> systems, are often from the connecting leads, especialy if not correctly
> positioned and layed out.  The internal static and dynamic magnetic
> fields are "Very" well contained.

Not necessarily.  I did some shaker work at one company, and their shaker
magnetized the CRT's on any computer that was within several feet of the
shaker table.  Sadly, the damage was irreparable.  The screens were left
with permanent rainbow splotches here and there even after running a
degaussing coil over the entire monitor.

-Chuck Harris

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