PM
To: Bob Kay ; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Sweeping noise/signal across band
Good point! I got this advice from someone earlier...but it wasnb t the UPS.
Nor was it anything else in my QTH domain. It comes and goees but does not
bother me too much. Part of the problem
on the radio.
73 Patrick AF5CK
-Original Message- From: K0DAN
Sent: Saturday, December 01, 2012 7:56 PM
To: Bob Kay ; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Sweeping noise/signal across band
Good point! I got this advice from someone earlier...but it wasnb t the
UPS. Nor
: K0DAN ; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Sweeping noise/signal across band
Here is how I locate it. I have an AOR 8000 portable receiver. I dial in the
offending freq and go hunting around the house. I've located a noisy
transformer on the pole. Smack the pole with a baseball
: Saturday, December 01, 2012 7:56 PM
To: Bob Kay ; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Sweeping noise/signal across band
Good point! I got this advice from someone earlier...but it wasnb t the
UPS.
Nor was it anything else in my QTH domain. It comes and goees but does not
bother me
Smacking poles with a big hammer (with or without a transformer
mounted on the pole) will also help identify loose connections which
may cause interference.
It's also a good way to bring loose power line hardware down on your
head!
The power company does NOT recommend slugging their poles.
I know they don't recommend it, but I was out with a Power guy one day a
few years back.
The thing he asked me was if I had a sledge hammer as he didn't have his
truck with him. :) Even when I called in the pole, the dispatcher asked
me how I found it. I told him with my AM Yaesu radio at
Welcome to urban noise pollution! At least that's my best guess. I have
switch mode power supplies in my house along with the PWM motor controller
on my furnace that make noise like that. The one I had that acted exactly
like yours was a SMPS powering my security cameras. The frequency changes
Konrad:
Most likely a wall wart that uses a switching supply inside it.
Unplug all the wall warts in your shack, one at a time.
Mine was the one running my WiFi base/router.
--- Graham
==
On Sat, Dec 1, 2012 at 4:15 PM, Steve Fowler killmo...@gmail.com wrote:
Welcome to urban noise
] Sweeping noise/signal across band
Welcome to urban noise pollution! At least that's my best guess. I have
switch mode power supplies in my house along with the PWM motor controller
on my furnace that make noise like that. The one I had that acted exactly
like yours was a SMPS powering my security
not be feasible to identify or resolve, esp in
FL condo.
GL es 73
Dan
K0DAN
-Original Message- From: Steve Fowler
Sent: December 01, 2012 04:15 PM
To: flexradio@flex-radio.biz
Subject: Re: [Flexradio] Sweeping noise/signal across band
Welcome to urban noise pollution! At least that's my
Sent: December 01, 2012 07:48 PM
To: K0DAN
Cc: flexradio@flex-radio.biz
Subject: Re: [Flexradio] Sweeping noise/signal across band
Check your UPS supply. You've described my situation exactly. I contacted UPC
and they had no interest in solving it. Unplugged the UPS and the problem is
gone
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