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Topband: Low band noise

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Subject: Topband: Low band noise
From: "Bruce" <k1fz@myfairpoint.net>
Date: Tue, 11 Feb 2014 15:58:22 -0500
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Getting noise from my NW direction. Does not seem to be local. Started 
wondering what, at distance,  could be causing it. At times it seems to have a 
rhythm like a motor.

There are a lot of power generating wind mills showing up.  Checking through 
Google, they generate DC and convert to  3 phase AC it with an inverter. The 
frequency and phase of the inverter is controlled with a sample from the power 
grid. 

Could their inverters have enough sine wave distortion to have harmonic energy?

So my question is: Does anyone have first hand knowledge of interference on the 
low bands from  power generator wind mills? 

Bruce-K1FZ
www.qsl.net/k1fz/beveragenotes.html
www.qsl.net/k1fz/pennantnotes.html
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