[Elecraft] OT: TV RFI Question

[Raymond Sills]

Plasma TV sets are often big RFI generators.  And, they have the annoying habit of developing burn-in... much like CRTs if a constant image is displayed.  I used to work for a TV network that used plasma displays as part of studio set decorations, and they quickly discovered that using a plasma display for an identifying graphic (a logo or some such) resulted in major burn-in, in part because they pushed the brightness of the display, so that it could be picked up by studio cameras in a brightly lit set.


RFI was not a big concern at the TV studio, but there have been many stories of neighbors who purchased a plasma TV set that happened to ruin their radio reception... as well as the HF activity of nearby amateurs.


73 de Ray
K2ULR
KX3 #211




-----Original Message-----
From: Gary Smith <Gary at ka1j.com>
To: Elecraft <Elecraft at mailman.qth.net>
Sent: Wed, Nov 7, 2018 1:39 pm
Subject: Re: [Elecraft] OT: TV RFI Question

Jim,

Ditch the Plasmas and be sure they leave 
your neighborhood.

I've got one of those insanely oversize LG 
OLED TVs and it puts out zero RFI that I 
can see on the P3. I did a lot of testing 
during the free return period just to be 
sure I wasn't bringing a noise generator 
into the house, and it's excellent in all 
ways. Also, it uses so little power 
compared to a much smaller Vizio TV, The 
glass is cool to the touch and the 
processor compartment is slightly warm at 
most.

OLED can produce a lot of brightness and 
power consumption relates to brightness so 
how you set it up matters energy-wise, but 
your Plasmas are multiples of the power 
the OLED uses. One very nice thing with 
OLED is you see genuine black, no backlit 
shade of gray, it takes awhile to get used 
to seeing very accurate color and shading 
when watching in a darkened room, we don't 
see that with the other kinds of TV.

73,

Gary
KA1J



> We´ve got three plasma TVs in our home. One is a 9 year old Sony
> that is small (by today´s standards) and causes zero RFI on my K3.
> Another is a piece of $&$% Samsung that completely rips up 160, 80,
> and 40 meters. The third (our main TV) is a Panasonic Viera that up
> until tonight has not caused any RFI. But I guess the honeymoon is
> over, as 40 meters tonight was unusable while the XYL was watching one
> of her shows. 
> 
> So, if I can convince her to replace the Panasonic I´m wondering if
> folks here have had any RFI issues with the new OLED TVs? We´ve
> enjoyed the quality of the plasma TV´s but enough is enough.
> 
> Jim Bennett / W6JHB
> Folsom, CA
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