Tom,
I'd love to do a lot of stuff with their tv, but it's not my house and I hate
to impose on them. I have to catch the neighbor outside on a weekend and chat
with him a little and maybe something might get going. As you can see I'm a
little squeamish about imposing on other people's home and property. I guess I
wouldn't like it much and therein lies my problem, hi. But I'll work on it.
Maybe by the time I finally can do some real investigation the TV will die.
Dale, k9vuj
On 26, Mar 2014, at 13:18, Tom Thompson <tlthompson@qwest.net> wrote:
> Dale,
>
> I checked with Costco and they only carry LED back lit TV sets now. In
> thinking about it further, I don't think making a measurement on the power
> cord with an RF current probe would be too definitive anyway because of the
> RFI coming from the other sets connected on the same circuit. It would be
> instructive if you could conduct some tests on your neighbor's set. Would it
> be possible to use a battery and quiet inverter to power the set with all
> other wires disconnected? You might have to connect the cable to get the
> screen to light. If you could do that and it eliminated the RFI then the
> line filters Ed suggested might work for you.
>
> Just some thoughts.
>
> Tom W0IVJ
>
> On 3/26/2014 2:23 AM, Dale J. wrote:
>> My next door plasma is broadband hash with various bumps along the way. I
>> have one of those bumps especially bad at 3.857, it's 20 db over 9 and
>> sounds like a motor running but changing speed and sometimes stopping and
>> starting. The broadband hash is all over the 80 meter band and 40 too. The
>> upper bands are less affected. I suspect part of the noise is from a
>> switching power supply in the plasma tv, that might be what that motor
>> sounding noise is not sure though. I wish it were my TV, I could then find
>> out more how these things tick before permanently disabling it. Makes it
>> difficult on my USAF MARS net too.
>>
>> Dale, k9vuj
>>
>>
>>
>> On 25, Mar 2014, at 21:16, David Cole <dave@nk7z.net> wrote:
>>
>>> Imagine thousands of little lightening bolts... Thats Plasma TV.
>>> --
>>> Thanks and 73's,
>>> For equipment, and software setups and reviews see:
>>> www.nk7z.net
>>> for MixW support see;
>>> http://groups.yahoo.com/neo/groups/mixw/info
>>> for Dopplergram information see:
>>> http://groups.yahoo.com/neo/groups/dopplergram/info
>>> for MM-SSTV see:
>>> http://groups.yahoo.com/neo/groups/MM-SSTV/info
>>>
>>>
>>> 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@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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