[UK-CONTEST] OT - RFI problem

[Roger G3SXW]

A few years ago my next door neighbour installed a new security light system 
and sensibly did a test with me. My 100 watts switched the lights on. He 
immediately called and the supplier sent a chap to add 'filters'. All easily 
solved. Good service, but sorry I don't recall the manufacturer.
73 de Roger/G3SXW.



----- Original Message ----- 
From: "Gordon Brown" <gordonbrowns at btinternet.com>
To: <g4fnl at bubloz.demon.co.uk>; <uk-contest at contesting.com>
Sent: Sunday, May 09, 2010 7:08 PM
Subject: Re: [UK-CONTEST] OT - RFI problem


Graham,
I had the same RFI problem with my burglar alarm when transmitting on 20M. 
The engineer who came to sort it out had no idea about what I was telling 
him but when he got back to his office they were aware and came up with some 
ferrite beads which solved the problem.
I would be interested in any replies you get because I am sending Morse 
messages via next doors security light but they haven't twigged yet - after 
five years and many new bulbs.
73 Gordon G3MZV.




________________________________
From: G4FNL <g4fnl at bubloz.demon.co.uk>
To: uk-contest at contesting.com
Sent: Sunday, 9 May, 2010 14:26:03
Subject: [UK-CONTEST] OT - RFI problem

Folks

Forgive the off topic nature - but I reckon that someone on this reflector
will be able to help.

I need to explain RFI problems that I am experiencing on a site nearby me to
a non-radio type person. The problem is solvable I am sure (it's RF
breakthrough into an intruder alarm.) However, as I say, this is not at my
QTH - it's elsewhere, and I don't really know the people involved yet as
this appears to be an intermittent type of problem. So, what I am trying to
do is have an analogy ready, to explain that whilst the problem is only
present when I am around, it's not actually my fault, and that the company
that fitted the alarm should be called in to investigate. Has anyone found
an analogy or example that explains RFI problem and whose 'fault' it is?

Any help much appreciated

73 Graham G4FNL

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