PLT/PLA and something (Smart TV?) using it to do an update?
http://www.ban-plt.org.uk/what.php What it is
http://www.ban-plt.org.uk/tests.php Some EMC test results. Graphic!
Lots of other good info on that site.
No affiliation whatosever.
73.
Dave G0WBX.
--- Original Message
On 2/19/2014 7:48 PM, Fred Jensen wrote:
My neighbors with the PTV are very busy, gone a lot, and while he
understands what his TV does to my reception, I acknowledge his right
to have that TV.
He has a right to HAVE it, but not to cause interference to you when he
turns it on.
Yes, Part
Jim (and others)...
From all the suggestions of the RFI, these are those that rank on the top of
the list but the list below is not ordered in any way.
1. Some tool or machine operated by a neighbor or maybe even a
construction/contractor guy working at a neighbor's house (really fits the use
Drat, you left out
4. Old-time Luddite ham operating a rotary spark
gap rig :-)
73, Phil w7ox (No, I'm not *that* old -- quite!)
On 2/20/14, 10:25 AM, Phil Hystad wrote:
Jim (and others)...
From all the suggestions of the RFI, these are those that rank on the top of
the list but the list
I get this type of noise when my wife uses a laminator.
I also get a lot of sporadic noise in the morning around the time people get up
which I assume are hair driers and curling irons.
It really could be anything, but probably something one of your neighbors has.
Good luck finding it, if
One of the items that many overlook is in-freezer ice makers. They
can make a lot of broadband noise when the heater is running. Yes -
heater. Once the ice cubes are frozen they need to be ejected. In
order to do this smoothly, the tray is heated up just enough to let
the cubes pop loose. The
Matt,
Well, then that source of this RFI is ruled out. Ice maker is off and I don't
think it has been on in years -- it may not even work anymore. About the
only time we might need ice is when we have a party of some sort (which is
also rare) that needs ice and we just buy a bag down at the
On Wed, 19 Feb 2014 10:15:42 -0800, Phil Hystad wrote:
Anyone have ideas of the cause.
The first thing to look at is your own house, of course. If you can very
temporarily power your radio from a battery, even a UPS (but not one you are
currently using, just to make sure that isn't the
From your message this sounds like a new one
you've not heard before. If so, let's hope it's
temporary so you won't have to locate it. If new,
unlikely your house or some large facility. If new
and persistent, could be a neighbor has a new TV
or appliance -- or the hospital with some new
Me too, as high as possible. Gets rid of a massive amount of clicks and
transmitted phase noise!
Sorry, couldn't resist.
On 2/19/2014 12:43 PM, mcduf...@ag0n.net wrote:
My favorite trick is to toss a small radio like a IC706 up
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
Just be careful it doesn't land on your head: The
706 is not what I would call a small radio.
Better to use a KX1 (had to get an Elecraft rig
into this to make it On Topic) :-)
73, Phil w7ox
On 2/19/14, 1:25 PM, Vic Rosenthal K2VCO wrote:
Me too, as high as possible. Gets rid of a
massive
It is hard to describe this noise because it lacks any features at all. Think
of atmospherics, like background noise that usually sits around S0 to S1 on the
S-meter, more on 80 meters in the evening. That sort of thing.
Now, make that noise a solid (no changes, no peaks, no features,
Based on my past experience - I would be thinking an arc welder (or wire
or some such similar). If not that, then you might want to check for
carbon trails on HV insulators along the road (usually very effected by
the weather). As a third guess - and a worst case scenario - a serious
problem
On 2/19/2014 2:23 PM, Bill W2BLC wrote:
If not that, then you might want to check for
carbon trails on HV insulators along the road (usually very effected by
the weather).
When we suspected a power line leak, the noise was usually continuous,
not intermittent.To verify which pole it came
How do you recommend he go about eliminating the
latter, which appears to be a nearby neighbor? ;-)
73, Phil w7ox -- K2#380, K1#18, K3/P3 shipping
this week :-)
On 2/19/14, 2:23 PM, Bill W2BLC wrote:
Based on my past experience - I would be
thinking an arc welder (or wire or some such
All of our electricity comes out of the ground. Everything is underground here
except for a few poles a number of blocks away. I have heard that kind of
noise before from insulators (dirt, carbon, etc.) and this is definitely not
that.
Besides, that would just not have this exact on off
I'm beginning to like that arc welder theory.
73 de Ray
K2ULR
On Feb 19, 2014, at 5:48 PM, Phil Hystad wrote:
All of our electricity comes out of the ground. Everything is
underground here except for a few poles a number of blocks away. I
have heard that kind of noise before from
I can't tell you what it is, but I can describe a few things for you:
Neighbor has a plasma TV. The noise is very broad and at low P3 spans
looks just solid as you describe. With a 200 KHz span, you can clearly
see the changing video, it's very apparent. Plasma TV's radiate off the
screen,
In my case, I walked next door and explained that his Plasma TV was
interfering with my radio reception. I then asked him to come to my
shack to see what the problem was. I showed him the signal from the
PTV on my monitor which is connected to the P3 and asked if we could
go to his home and turn
I had local power line noise
so
Send a letter / form you can download from the ARRL to both CalTran and
the FCC local office
you will get results,, send to the in charge office of caltran
spend a buck and use USPS ceritfied letter with a return rcpt
it works
Bob K3DJC
My current noise source
So how did he eliminate the noise from the PTV?
Phil w7ox
On 2/19/14, 3:57 PM, Amateur Radio Operator N5GE
wrote:
In my case, I walked next door and explained that his Plasma TV was
interfering with my radio reception. I then asked him to come to my
shack to see what the problem was. I
Maybe he took it back to the store where he purchased it and got a
refund. That would be the best outcome.
73 de Ray
K2ULR
On Feb 19, 2014, at 7:22 PM, Phil Wheeler wrote:
So how did he eliminate the noise from the PTV?
Phil w7ox
I suggest you contact your electric utility. Most utiltiies have a
power quality department, and in general the staff are *very* well
equipped and trained to locate RF noise if it's on their system. Some
utilities call this their Amateur Radio division or department.
Years ago, I had symptoms
My experience in Virginia and in New York was excellent with the power
companies. Their quality control section had a couple of hams as team
members - meaning we all spoke the same language. It might pay to ask if
any team members are hams. Utility companies are loath to electricity
loss,
On 2/19/2014 3:57 PM, Amateur Radio Operator N5GE wrote:
I then asked him if he was experiencing interference from my radio
transmitter, to which he replied no.
Problem solved.
Ummm ... and how? This is the conundrum [or maybe fallacy] in Part 15.
Unsuspecting and un-knowledgable
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