[PPRAANet] PPRAANet Digest, Vol 112, Issue 1

[Daniel Beals]

Hi Jim
I've helped several friends with this quick test. Using a battery operated radio, turn off
the main breaker in your house first, and see if the noise stops. If so, then turn back on the
mains and turn off individual breakers one at a time.  In one case, found the noise stopped after
turning off the breaker to the garage and then we narrowed the problem by unplugging each item till
it stopped.  The culprit was a battery charger used for cordless tools.  It had created rf even with no
battery in it being charged. Many dc to dc converters used in battery chargers have a rf oscillator.  Hope that helps.
Dan AC0CC

> From: ppraanet-request at mailman.qth.net
> Subject: PPRAANet Digest, Vol 112, Issue 1
> To: ppraanet at mailman.qth.net
> Date: Sat, 3 Aug 2013 12:00:10 -0400
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> Today's Topics:
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>    1. HF Noise Location (Jim Harris)
> 
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> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Fri, 2 Aug 2013 12:42:51 -0700 (PDT)
> From: Jim Harris <jim.w0em at yahoo.com>
> To: PPRAA <ppraanet at mailman.qth.net>
> Subject: [PPRAANet] HF Noise Location
> Message-ID:
> 	<1375472571.29280.YahooMailNeo at web162203.mail.bf1.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
> 
> Hi Folks,
> 
> I'm looking for anyone with equipment to locate a noise source on HF. ?I here intermittent (5 sec on and 5 sec off) noise on most of the HF bands. ?Sometimes it is off for a few minutes and them returns with the same cycle. ?The level ranges from S4 on the extreme HF end bands to S9+ on 20 meters. ?It has been ongoing for 3-4 weeks. ?Needless to say that makes using HF nearly impossible. ?Using my tribander beam, it is generally east of my location. ?Without portable equipment that is the best I can locate it. ?
> 
> I would like to find it and work with whom ever's location it is coming from to eliminate it. ?My thanks to anyone who can help.
> 
> 73,
> 
> Jim, W0EM
> 
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> End of PPRAANet Digest, Vol 112, Issue 1
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