[Elecraft] Walmart Plasma Test

[Tom McCulloch]

I would think you drew some strange looks from the "Black Friday" gang...hi
tom
wb2qdg
----- Original Message ----- 
From: "Steve Ellington" <n4lq at carolina.rr.com>
To: <Elecraft at mailman.qth.net>
Sent: Friday, November 26, 2010 5:05 PM
Subject: [Elecraft] Walmart Plasma Test


> Today I paid a visit to Walmarts TV department. I brought along my 
> portable AM radio. While tuned to a spot on the AM BC band, I walked along 
> the row of dozens of flat screen TVs. There must be at least 50 of them! 
> Suddenly the noise level jumped to a loud roar. I looked at the 42" set 
> next to me and sure enough, it was a plasma. I started checking every set. 
> Every plasma produced the loud QRM while every LCD/LED was quiet.
> There are not many plasma sets left but every brand was horrible.
> The noise sounds exactly like your typical power line noise but you can 
> hear the pitch change as the video scene changes. When the screen goes 
> totally black, like between commercials, the frequency changes greatly.
> I ran the little radio around the screen and really couldn't tell that the 
> QRM was stronger at any given position.
> I'm fairly certain now that what I'm hearing on 80m is a plasma tv from my 
> neighbor. Now I just have to figure out a way to approach them about 
> replacing it. I may end up buying them one!
> Steve N4LQ
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