I think I located the source of the noise. A street light that keeps cycling
on and off...even during the day. It matches the cycle of the interference.
I entered a trouble ticket with the local utility company and the work has
been scheduled.
The pole is about 1/2 mile from me.
I'll post the results.
Doug - K1ZO
----- Original Message -----
From: "Gary Smith" <wa6fgi@yahoo.com>
To: <rfi@contesting.com>
Sent: Tuesday, November 12, 2013 3:40 PM
Subject: Re: [RFI] RFI Identification Help
You might want to help out the local pwr company by giving them the "pole
number". Where I live this is a vertical strip with 5 digits on it.
The folk I have talked to when reporting a light out or other problem have
greatly appreciated this info.
Gary...wa6fgi
On 11/11/2013 5:32 AM, dalej wrote:
The street lights we have in our city (Bloomington Mn.) have a little
device on top that senses when it's getting dark and to turn on the
individual street lights. When that thing goes bad or if the ballast
inside the light fixture goes south, these lights can produce ungodly
amount of on and off noise. I have found these things several blocks
away from my QTH with interfering noise. Sometimes when they are in
failure mode they will be on steady during the day. So if you have this
type of street light drive around for several blocks away from your QTH,
night is best as these things will be on bright for a half minute or so
then suddenly shut off, wait a few more seconds and you will see them
start to come on slowly and that is the time they generate their noise,
awful noise and on the low bands, 80 meters which I use. Fortunately for
me the local power company has responsibility for maintaining these
lights and they have been responsive to my calls, depending on other
wo
rkload priority.
I'm not saying this is your noise source rather just sharing my
experience with on off type noise, as another poster mentioned it too.
73 and I hope you can find it.
Dale, k9vuj
On 11, Nov 2013, at 6:40, Doug Scribner <dscribner@myfairpoint.net>
wrote:
Upon further investigation I have discovered that the interference is
also present during the daytime although it is much lower in amplitude.
It still maintains the same On/Off cycle.
Doug - K1ZO
----- Original Message ----- From: "Lee K7TJR" <k7tjr@msn.com>
To: "'Doug Scribner'" <dscribner@myfairpoint.net>
Sent: Sunday, November 10, 2013 9:45 PM
Subject: RE: [RFI] RFI Identification Help
Doug, this might be a street light cycling at night. It's a little fast
of a
cycle, but they only come on at night.
Suggest you drive your neighborhood at night with a BC radio and you
should
be able to find this if it is a light,
while observing it go off and on.
The noise is very strong as the light comes on and quiet when it goes
off.
Good Luck,
Lee K7TJR
-----Original Message-----
From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of Doug
Scribner
Sent: Sunday, November 10, 2013 4:23 PM
To: rfi@contesting.com
Subject: [RFI] RFI Identification Help
Symptoms:
Primarily on 160. Although it is also present on 40 and 80. It is much
stronger on 160
Only on at night...after dark.
Cycles On and Off at set intervals. 20 seconds On and 30 seconds Off.
Produces S4-5 spikes every 2.5 to 3 Kc
A neighbor less than 1/4 mile away recently installed an electric
fence. I
do see regular spikes, very short in duration. Not really that much of
an
issue.
I have verified that it does not come from within my house.
I have a picture of the interference on my SM-5000 station monitor if
anyone
thinks that would help.
Any assistance would be greatly appreciated. It has really put a damper
on
my 160 operation.
Doug - K1ZO
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