Tom,
Did you happen to check how far that radiation extended that came directly from
the set? I'm curious to know because the one I'm dealing with is about 140 or
so feet from my antenna and if that radiation doesn't carry that far then I
would suspect it's noise is being carried by either the antenna lead or line
wiring or both.
73
Dale, k9vuj
On 25, Mar 2014, at 19:28, Tom Thompson <tlthompson@qwest.net> 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@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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>> _______________________________________________
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>
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