[RFI] ARRL to FCC...

David Cole dave at nk7z.net
Tue Mar 25 22:16:58 EDT 2014


Imagine thousands of little lightening bolts...  Thats Plasma TV.
-- 
Thanks and 73's,
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On Tue, 2014-03-25 at 18:28 -0600, Tom Thompson wrote:
> 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 at comcast.net]
> > Sent: Tuesday, March 25, 2014 2:29 PM
> > To: Hare, Ed W1RFI
> > Cc: rfi at 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 at 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 at contesting.com] On Behalf Of KD7JYK DM09
> >> Sent: Friday, March 21, 2014 12:23 AM
> >> To: rfi at 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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> 
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