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Re: [RFI] ARRL to FCC...

To: "Hare, Ed W1RFI" <w1rfi@arrl.org>, "Dale J." <dj2001x@comcast.net>
Subject: Re: [RFI] ARRL to FCC...
From: Tom Thompson <tlthompson@qwest.net>
Date: Tue, 25 Mar 2014 18:28:41 -0600
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Ed,

I checked out a few plasma tv sets a couple of years ago with a portable shortwave receiver. The RFI was coming right out of the front of the set which made sense since that was where the discharge was occurring.

Tom   W0IVJ

On 3/25/2014 12:31 PM, Hare, Ed W1RFI wrote:

Thanks, Dale.

We can then see if the TV is still in production.  If it is no longer 
manufacturered, it may be a harmful interference complaint, not a possible 
emissions-limit violation.

The ARRL Lab would also be willing to provide a few filters to try, if your 
neighbor is willing to work with you.  Some have speculated that the noise 
comes directly from the TV, and this could be true, but I still tend to think 
in terms of noise coming out the AC mains and possibly also being radiated by 
the shield of the incoming coaxial feed line.

-----Original Message-----
From: Dale J. [mailto:dj2001x@comcast.net]
Sent: Tuesday, March 25, 2014 2:29 PM
To: Hare, Ed W1RFI
Cc: rfi@contesting.com
Subject: Re: [RFI] ARRL to FCC...

Ed

I'll see if I can get that information from my neighbor, but it will take a 
while.  I have to actually get in the house and look at the back of the TV and 
get the model number because I don't think they know for sure.  As soon as I 
get it I'll send you a email.

Tnx
73
Dale, K9VUJ


On 25, Mar 2014, at 13:04, "Hare, Ed  W1RFI" <w1rfi@arrl.org> wrote:

If the ARRL Lab can get some reports involving specific model numbers, we can 
do some testing and find out where these plasma sets stand.  I had a report in 
MD that involved two Samsung plasma TVs. One made very loud radiated noise, 
while the 2nd model, also a plasma TV, was quiet.

I need reports that involve a plasma TV operating in a neighbor's home causing 
harmful interference.  So far, most of the reports have been about the QRZ.com 
and RFI list discussions, not a specific report.

The ARRL Lab can measure conducted noise and radiated noise from devices, but 
we really need to start with actual, non-general reports.

Ed Hare, W1RFI
ARRL Lab

-----Original Message-----
From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of KD7JYK DM09
Sent: Friday, March 21, 2014 12:23 AM
To: rfi@contesting.com
Subject: Re: [RFI] ARRL to FCC...

: Now if they would recall all the damn plasma TV's out there doing the same
: thing it would really tickle my butt cheeks...but, any such action is
: goodness!

How mant times have you contacted the FCC regarding the interference to your 
licensed service?

Kurt

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