[Elecraft] (Very OT)Plasma TV noise

Brian Moran brianmo at yahoo.com
Fri Jan 21 23:40:35 EST 2011


I have a neighbor a couple of hundred yards (yes, that far) that away that 
purchased a plasma approximately 15 months ago; since then, when it's on,  I 
have s7-s9 noise from the AM band through 80m (at various points). I offered to 
purchase a new LCD display for him to replace it, but he "likes the way it looks 
better than any other". I don't expect to be able to obtain relief short of FCC 
intervention.  It even interferes with vehicle AM radio while driving near his 
house. While the ARRL recommends to work with your neighbor to try to solve the 
issue (with ferrites and the like), I don't believe this advice is in tune with 
today's social conventions, liability laws, "last mechanic syndrome", and the 
like. I would be reluctant to touch anything on anyone else's equipment lest I 
be responsible for any future real or perceived issues with proper operation.  I 
think the only effective solution would be to 'go nuclear' and get the FCC 
involved; what I find is that I just operate less.

Quite the bummer, because my favorite band over the last few years has been 
160m. 


Brian N9ADG




----- Original Message ----
From: Steve Ellington <n4lq at carolina.rr.com>
To: Chris Hembree <w7cth at yahoo.com>; elecraft at mailman.qth.net
Sent: Fri, January 21, 2011 7:23:58 PM
Subject: Re: [Elecraft] (Very OT)Plasma TV noise

Chris
Take a transistor AM radio to Wal-Mart and walk past the TV sets. When you 
get near a plasma you will hear it. The LCDs are fairly quiet. Plasma set 
noise comes right off the screen and is strong enough to be heard for some 
distance. The only cure is to unplug the TV. They even radiate some when 
turned off!
I believe my neighbor has a Plasma set. It wipes out 80 meters mostly. I 
plan to find out soon and if necessary I'll help him replace it. 73
Steve
N4LQ
----- Original Message ----- 
From: "Chris Hembree" <w7cth at yahoo.com>
To: <elecraft at mailman.qth.net>
Sent: Friday, January 21, 2011 7:56 PM
Subject: [Elecraft] (Very OT)Plasma TV noise


>I am helping a friend track down some RF noise that is riding on the Cable 
>TV line. From CableONE TV and internet service.
> This noise is wiping out his 75/80 meter band.
> I am posting this because some of you have had Plasma TV noise, and I 
> don't know what that sounds like.
> Can someone send be a small audio clip of what this noise sounds like. I 
> think it is from the color frequency of the cable service.
>
> Sorry for being so OT on this one.
> Chris W7CTH
>
>
>
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