From: David Powell
Subject: Re: OT:Re: Digital divide by ten, 1949 style
Date: Tue, 24 Sep 2002 21:36:38 +0100
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In article ,
email@example.com (Joe Morris) in alt.folklore.computers wrote:
>"Ian Buckner" writes:
>>Long ago I once worked with a guy who did his MSc at Jodrell Bank
>>radio telescope. They had very intermittent, severe interference.
>>This was eventually traced to a furniture factory a few miles away.
>>They were using a similar system for curing the glue used to assemble
>>Instead of a pellet of plastic they put the entire piece of furniture
>>in the hot spot. The trouble was they made the chair part of the RF
>>resonant circuit, and as the glue cured, the oscillation frequency
>>varied and (with the right size of chair) swept across one of the bands
>>the radio telescope was using. So there would be no interference for
>>months, until it was time to do a batch of just the right size chairs...
>Thanks; I'll add it to my roster of spectrum-pollution stories for
>Question: what, if anything, could Jodrell Bank do about this interference?
>(And what finally happened?) Also, can you provide a time frame for this
They had some clout with the regulatory authority. Amateur Radio on
the 4 metre band was banned within a 50 mile radius of J.B. for
years, Probably still is, but I lost interest 20 years ago.