Jeff Cochrane - VK4BOF wrote:
most of the people have upgraded to LCD's
Fortunately the higher power consumption (2-3X) of plasmas versus LCD/LEDs
is causing plasmas to gradually vanish. I contacted several neighbors to
alert them of the plasma RFI issue and every one had already decided
You guys in the States are lucky, the FCC listens and takes action.
In the UK our Regulator Ofcom blames radio amateurs for having
sensitive receivers, and as a consequence says it can do nothing to help...
73
Stewart G3RXQ
On Tue, 10 May 2011 18:49:49 -0800, Jim Wiley wrote:
You guys are
You lot are all fairly lucky that you can even get a response from your
regulator.
Here in Australia our wonderful regulator ACMA (Australian Communications
Media Authority) does 3/5's of bugger all with almost everything to do with
Amateur Radio, except for holding out their greedy little
This is a common problem with all plasma TVs and the Panasonic brand in
particular. Here in the UK Ofcom ( UK version of FCC) has been involved with
the manufacturer and the defective sets have had their plasma panels replaced.
The interference is radiated directly from the screen and
Jim Wiley-2 wrote:
The FCC has the power to
force your neighbor to stop using the interfering device.
Bet that improves neighbourly relations no end.
-
Julian, G4ILO. K2 #392 K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune -
With only six FCC enforcement engineers, it's not likely to result in
another Hatfields vs McCoys relationship.
matt W6NIA
On Wed, 11 May 2011 02:56:22 -0700 (PDT), you wrote:
Jim Wiley-2 wrote:
The FCC has the power to
force your neighbor to stop using the interfering device.
Bet that
On 5/11/2011 7:42 AM, Matt Zilmer wrote:
With only six FCC enforcement engineers, it's not likely to
result in another Hatfields vs McCoys relationship.
You mean only six in one district. Problems of this sort are
usually handled by letter before anyone is sent out. ARRL
Volunteer
On 5/10/2011 7:49 PM, Jim Wiley wrote:
You guys are aware, I suppose, that interference of this level and
duration clearly qualifies as the type of interference that merits
direct FCC intervention. File a complaint.
Absolutely. We are right and they are wrong. If we lay down, we have
only
On Wed, 11 May 2011 09:34:05 -0700, Jim Brown wrote:
On 5/10/2011 7:49 PM, Jim Wiley wrote:
You guys are aware, I suppose, that interference of this level and
duration clearly qualifies as the type of interference that merits
direct FCC intervention. File a complaint.
Absolutely. We are
My next-door neighbor was probably one of the early adopters of plasma TV
several years ago.
One night at bedtime I switched on the AM radio and was met by severe buzz all
over the dial. Not a single station was listenable. I could hear the buzz all
the way up to 10 meters. It only took me a
Same thing here but the neighbor is no help other than allowing me to buy
them a new TV. Theirs is a Samsung 58 plasma. Forget using any kind of line
filters. The noise is radiated from the SCREENstraight out.
After months of experimentation, the only cure has been the MFJ-1026 and it
works
You guys are aware, I suppose, that interference of this level and
duration clearly qualifies as the type of interference that merits
direct FCC intervention. File a complaint. The resolution process will
take some time, but you will win in the end. The FCC has the power to
force your
Speaking of plasma displays, does anyone know what the display type is for these
new billboards I see popping up all over town here in the North Texas area that
appear to be either LCD or plasma?
When I drive by them there is a lot of noise at HF and VHF and there is one
about a mile from me
I'll certainly second this suggestion, especially in concideration that the
160m test is coming, and the lack of
hearing by many is extremely one sided, compared to the amount of signal from
some of the stations.
Some of the stations would benefit immensely from this addition. However, I
Hi Tom
It would be useful to see what the waterfall looks like too as you can spot
the time varying nature of it then. I see some amazing waterfall patterns
from various mystery sources.
73 Stephen G4SJP
On 28/11/2010 04:39, Amateur Radio Operator N5GE n...@n5ge.com wrote:
I don't know
I wonder if Plasma TV QRM interferes with Civil/Emergency
Communications like fire, police, HS, or FAA?
That would be a more effective point with neighbors than you are
interfering with my hobby.
?
73 Jack KZ5A
On 11/27/2010 10:39 PM, Amateur Radio Operator N5GE wrote:
I don't know
Not in the USA AFAIK. Emergency services are all VHF/UHF now as are domestic
aircraft communications. Even commercial shipping in coastal waters is VHF
now.
OTOH, as an active RACES member working with my local Community Emergency
Response Team (CERT), my neighbors would be sorely disappointed
I am aware of that but there is no requirement and no testing below 30MHz.
Another correction: The statement is only required in the operator's manual.
AB2TC - Knut
Joe Subich, W4TV-4 wrote:
As pointed out to me in a private E-mail to me this should be
Part 15. This is the regulation
Loved my K3 on 160M this contest weekend.
Obviously, 160M and QRN go hand in hand, and there was plenty of
it, mostly thanks to my local power company. I did notice, on my
awesome P3, a pronounced, gently-shaped rise in noise just below 1.8
MHz. It was 20-30dB louder than the average -115dB
On 11/28/2010 8:16 AM, Ron D'Eau Claire wrote:
Not in the USA AFAIK. Emergency services are all VHF/UHF now as
are domestic aircraft communications. Even commercial shipping
in coastal waters is VHF now.
FYI - there are several HF nets used for EmComm - some for MARS
(Elecraft is one of
Update on my Plasma TV noise.
I drove thru Cleveland yesterday and purchased a timewave ANC-4 and set
it uptoday.
Is it perfect? No
Does it work? Yes, it does enough nulling of the noise that I can use
the K3 with my TV on. It makes a significant difference in my receive.
It would be
Glad to hear it helped. I could have used one tonight on 80m!
Plasma TVs are unique. The gas pixels are triggered by high voltage. This
means there are thousands of conductors, high voltage and high current right
on the screen. This makes a very nice transmitter that can broadcast for
blocks.
2 points to make:
in the EMC column in RadCom that mains
borne interference is radiated best on the frequency at which the antenna
cable is a quarter wave. That explains why my interference is worst on
20m,
since 16ft 6in is just about the length of the run of cable from ground
level to the
KL7DTH and myself share a station. We have a DX engineering NCC-1 box
specifically purchased to remove interference from the neighbor's plasma
TV. Once we figured out how to use the unit, it completely removes
the trash from the plasma RFI generator. And we mean completely - zip,
nada,
Phil Kane-2 wrote:
On 11/26/2010 1:03 PM, Stewart wrote:
It's interesting to see that today's UK brother agency (OFCOM) has
the same attitude as today's FCC about (non)enforcement.
Here, as in the US I'm sure, it all comes down to money. The resources
aren't there to enforce the
Folks, we are getting further off-topic as this thread morphs into a regulatory
and government/manufacturer discussion. Please end that portion and just focus
on technical methods to remedy interference.
Also, take note, when there are a very large number of postings on any thread,
as there
Hi,
I am sorry Eric but I need to correct a mistake of mine. I was referring to
FCC Part 95 in a previous post. As pointed out to me in a private E-mail to
me this should be Part 15. This is the regulation that enables manufacturers
to ship anything they want as long as they plaster this message
As pointed out to me in a private E-mail to me this should be
Part 15. This is the regulation that enables manufacturers
to ship anything they want as long as they plaster this message
on the back of the product:
Part 15 does not allow manufacturers to intentionally ship anything
that
I don't know what plasma TV RFI signatures look like, but here is something that
shows up every morning at about 08:00 local time and stays with me until about
22:30 every evening here in Arlington, TX. I can't work 30m in the day time
unless the signals are above S-7 :o(
In the UK there have been many complaints about RFI from Panasonic Plasma TV's.
Some people have had success in getting the problem resolved, generally by the
entire
screen assembly being changed out. Others have received the same sort of
response as you.
Luckily my neighbour who had a very
Hi all,
I am curious as to what this noise sounds like. I don't think I have any of
it but it would be nice to be able to recognize it if someone in the
neighborhood should get one. Could someone with the noise provide an audio
clip? I can host the clip for anyone with limited options, although
Maybe this older article will help.
http://www.eham.net/articles/4285
73 de Brian/K3KO
On 11/26/2010 17:02, ab2tc wrote:
Hi all,
I am curious as to what this noise sounds like. I don't think I have any of
it but it would be nice to be able to recognize it if someone in the
neighborhood
Hi,
Interesting article. I take some consolation in the fact that the article
goes all the way back to 2002. Maybe the predicted onslaught of these TV
hasn't happened. I have two LCD TVs and have never considered going to a
plasma device. The LCD TVs are relatively benign, although I can hear
So based on all the information the best bet is a MFJ 1026 sound
cancelling system and that is a hit our miss solution.
The next question that I have is there any similar devices made by
different companies so one can compare options.
I am willing to try a solution like this as its much
The ANC-4 is the original design for active cancelling
systems. It can be VERY effective. Try mounting the
sense antenna as close to the offending TV as possible.
http://www.timewave.com/support/ANC-4/anc4.html
73
Gene K1NR
K2 6Kxx
On Fri, 26 Nov 2010 13:35:26 -0500 (EST)
Panasonic stuff isn't all bad!
We have two Panasonic LCD TV's here. Both have very good pictures and
neither is a QRM generator.
Whilst I understand the motivation to boycott their products, I feel
that giving the vote of confidence to their RF quiet products in
preference to their heavily
$10 more than a MFJ 1026, so I guess I give someone else than MFJ my
money.
When I get it I will give a review to the list.
Thx
Don
KD8NNU
On Fri, Nov 26, 2010 at 1:42 PM, Eugene Balinski wrote:
The ANC-4 is the original design for active cancelling
systems. It can be VERY effective. Try
Hi Don,
The JPS ANC-4 is similar to and preceded the MFJ unit. It lacks the 'Peak
and Invert' feature of the MFJ. I suspect it is sometimes easier to find a
peak and invert than finding a null. I recall on the ANC-4 finding a good
null was sometimes difficult.
73,
Dick - KA5KKT
I guess I picked the right brand. I've had a Pioneer 50 plasma since 2004
and it doesn't generate any RF noise.
Phil - AD5X
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
Hi,
One thing is for sure: Once you have either one of these devices in front of
your K3 receiver, you can wave good-bye to the world class blocking and IMD
dynamic range of your receiver. I would consider this an absolute last
resort. I don't think I could put up with the necessary knob
I believe that anything that is worth griping about in public carries with
it the obligation to gripe to the regulatory agencies too.
Sure, the FCC isn't likely to even notice, much less act upon, a letter from
one person.
But, how about thousands of e-mails or phone calls a month from
Enlist the support of RAC. The noise issue has no respect for the 49th
parallel.
Gary, VE1RGB
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ron D'Eau Claire
Sent: November 26, 2010 4:34 PM
To: elecraft@mailman.qth.net
Can only speak as I find Phil...
The UK TV licence includes a clause which says that the owner of
the television apparatus shall not permit it to cause interference.
If that was enforced, then all TV manufacturers would have to comply with
the regulations, or have no sales in the UK...
73
Hi,
Amen to that. At least in this case there is no doubt that the FCC has
jurisdiction (as opposed to power line noise where they apparently don't
(The FCC does not regulate power companies is a standard response of
theirs)). So rest assured that I will complain first time I have any
evidence
HI Dick,
From your comment you prefer the MFJ unit.However, I am concerned
about MFJ quality. Do you have one of these that you use?
Thx
Don
On Fri, Nov 26, 2010 at 2:07 PM, Edward Dickinson, III wrote:
Hi Don,
The JPS ANC-4 is similar to and preceded the MFJ unit. It lacks the
Hi Knut,
Your comments are well noted and if the noise is not present I can
disconnect it from the system. However when this noise is present, I am
unable to do anything. So world class is relative to the enviornment
and there are times when my well are not world class. :-(
Don
On Fri,
ab2tc wrote:
Hi,
One thing is for sure: Once you have either one of these devices in front
of your K3 receiver, you can wave good-bye to the world class blocking and
IMD dynamic range of your receiver. I would consider this an absolute last
resort. I don't think I could put up with the
Don't get me wrong Julian, I would make the same choice as you given the
circumstances. It's just that the circumstances shouldn't be so. This whole
thing with allowing devices that will for sure interfere and then leave it
to the affected parties to resolve the problems when the inevitable
On 11/26/2010 1:03 PM, Stewart wrote:
Can only speak as I find Phil...
The UK TV licence includes a clause which says that the owner of
the television apparatus shall not permit it to cause
interference.
If that was enforced, then all TV manufacturers would have to
comply with the
It is a shame that there is not more FCC enforcement directed at
manufacturers rather than at consumers.
Have you ever tried to convince a consumer that his expensive TV is
producing radiation that is interfering with your ham radio? Talk about
getting that deer in the headlights stare!
The
I had a Vizio 46 plasma TV which seemed to be pretty quiet. It was less than
10 feet from my K2 and TS-570 (my vertical antenna is about 60 feet away).
Unfortunately it died after about 4 years and was replaced by a LCD model.
Vizio no longer makes plasma sets.
Bob, N7XY
On Nov 26, 2010,
On 11/26/2010 2:20 PM, Don Wilhelm wrote:
It is a shame that there is not more FCC enforcement directed at
manufacturers rather than at consumers.
Have you ever tried to convince a consumer that his expensive TV is
producing radiation that is interfering with your ham radio? Talk about
Hello again again,
Hi again,
When I came across this thread, I was somewhat puzzled, as I didn't think
that there was this imminent threat of an onslaught of interference from
plasma displays. A little bit of Google research and talk with people in the
know bears out that the plasma technology
Well, 80% of my operating time is spent in what seems like electromagnetic
hell. The irony is that I live in a rural area at the end of the earth. I
have only 3 neighbours within a 4km radius. One of them has a plasma screen
TV. Another has something else, perhaps an arcing thermostat or
I used ANC in the past. It was good.
Sent from my iPhone 4
VK7JB zen...@netspace.net.au 於 2010年11月27日 下午2:18 寫道：
Well, 80% of my operating time is spent in what seems like electromagnetic
hell. The irony is that I live in a rural area at the end of the earth. I
have only 3 neighbours
Will 14.3 Mhz distroy the plasma's power supply?
N4LQ
Steve
- Original Message -
From: Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com
To: d...@w3fpr.com; gold...@charter.net
Cc: elecraft@mailman.qth.net
Sent: Thursday, November 25, 2010 12:50 AM
Subject: Re: [Elecraft] Plasma TV Noise
K2QI wrote:
As a movie buff, I can't stand black crush, so I live with my Panasonic
plasma. When I do QRV, the fix is simple; I turn the TV off.
Not much help for those of us who want to go on the radio while the wife
watches dross on TV. I just read in the EMC column in RadCom that
I had a Panasonic Plasma TV that not only caused radio interference but also
heated up my
bedroom in a central air conditioned house so much that I could not be
comfortable especially
in the summer. I first contacted Panasonic about these problems and they were
of NO HELP.
The representative
When our plasma TV is on it has a very strong interference that no
combination of the NB, NR, or Filters have any effect on the K3.
I am wondering if an active audio filtering system such as the DHL out
of England may help.
I have searched the web for ideas and I have not found anything for
Don,
Plasma TVs are like that - sounds like you need to line up for the Black
Friday deals on TVs on Friday :-)
73,
Don W3FPR
On 11/24/2010 8:10 PM, gold...@charter.net wrote:
When our plasma TV is on it has a very strong interference that no
combination of the NB, NR, or Filters have any
Its my wifes TV I have to live with it.
On Wed, Nov 24, 2010 at 8:41 PM, Don Wilhelm wrote:
Don,
Plasma TVs are like that - sounds like you need to line up for the
Black Friday deals on TVs on Friday :-)
73,
Don W3FPR
On 11/24/2010 8:10 PM, gold...@charter.net wrote:
When our
I think it is time to dump the plasma tv.. They are nothing but RFI
generators... Certainly not compatible with Amateur Radio...
Jim K4JAF
'
- Original Message -
From: Don Wilhelm w3...@embarqmail.com
To: gold...@charter.net
Cc: elecraft@mailman.qth.net
Sent: Wednesday, November 24,
So buy her a new TV for Christmas. Seems a simple enough solution to
the problem. Have it turn out that her present TV has some sort of
radiation leakage problem or something, and you're only looking out for
her.
- Jim, KL7CC
gold...@charter.net wrote:
Its my wifes TV I have to live
These days when I buy *any* appliance it's with the understanding I can get
a full refund if I find it creates RFI issues.
Frustrating that our current laissez-faire approach to business in America
has robbed the FCC of any ability to put a stop to these emitters.
Ron AC7AC
-Original
Amen, take it back if RFI. And stay away from Plasma TVs...
Jim K4JAF
- Original Message -
From: Ron D'Eau Claire r...@cobi.biz
To: elecraft@mailman.qth.net
Sent: Wednesday, November 24, 2010 8:59 PM
Subject: Re: [Elecraft] Plasma TV Noise any ideas on how to filter it out.
Tis true they are RFI generators, but plasma black levels are still much
better than LCD, LCOS, or DLP sets. Only thing that's better in that area
are tube televisions.
As a movie buff, I can't stand black crush, so I live with my Panasonic
plasma. When I do QRV, the fix is simple; I turn the
All,
An active noise cancellor such as the JPS ANC-4 may
really help. You have to stop or minimize the noise before
it gets in to the radio.
Place the ANC-4 sense antenna as close to the offending TV
as possible and then adjust the controls for best noise
reduction.
73,
Gene K1NR
My pet hate!
My 3 next door neighbours each have at least 2 of the damned plasma TV's.
There is not alot you can do except to complain to the FCC / ACMA / whatever
your liocencing body is called about the interference.
There's a reason that they (Plasma TV's) have been banned in the EU zone, now
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