I recently read an article on RFI, looking for information on 
cleaning RF hash out of switchmode power supplies that were not 
manufactured to the specs we would prefer as radio operators.

If our equipment is functioning properly, there should be no RFI on 
other devices.  If there is, it's usually the device's fault, not 
ours.  The advice given out by the ARRL nowadays is not to admit to a 
problem.  If you receive a report of interference, certainly do check 
your equipment.

Then check theirs, if they're willing.  Not because you've got an 
obligation to fix it, but because it's the neighborly thing to do, 
and because any device that detects RFI can potentially emit it under 
the wrong circumstances.

The article had lots of specific advice for specific devices and 
problems.  Its advice for touch lamps was to throw them away.  ;)  
Failing that, add a resistor in series with the lead between the 
controller and the touch plate.  If that doesn't solve it, wind 
several turns of the lead between the resistor and the socket around 
a good ferrite choke.  The ferrite may be enough on its own.  I can 
find it again if there's interest in what the resistor value was.

Joseph - KF7QZC


On Mon, Sep 19, 2011 at 09:21:58PM -0400, Steve wrote:
>Yeah, I had a problem with a touch lamp.  After I'd get done transmitting,
>invariably the light would run for the rest of the day until somebody saw it
>in the bedroom.
>
>
>----- Original Message -----
>From: "Richard Fiorello" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Monday, September 19, 2011 5:00 PM
>Subject: frig problems
>
>
>> Hi;
>> I thought I had problems back in the 1980s.  The running water might
>> have been my end.  I had enough problems when I destroyed the ninth
>> inning of Yankee games and yes there was there was that lovely touch
>> lamp that happily blinked whenever I was on.  Its all funny now but
>> wasn't always so funny back then.
>> --
>> richard