Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-db01.r1000.mx.aol.com (Internet Inbound) with ESMTP id E2E6438000086; Thu, 22 Sep 2011 16:16:52 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1R6pgC-0003HH-Ok for rs_out_1@blacksheep.org; Thu, 22 Sep 2011 21:15:32 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1R6pgB-0003H8-OL for rsgb_lf_group@blacksheep.org; Thu, 22 Sep 2011 21:15:31 +0100 Received: from mail-iy0-f171.google.com ([209.85.210.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1R6pg9-0007vr-3D for rsgb_lf_group@blacksheep.org; Thu, 22 Sep 2011 21:15:31 +0100 Received: by iagv1 with SMTP id v1so5696810iag.16 for ; Thu, 22 Sep 2011 13:15:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=qwTFCMNt2l7A3ydaFhvGtJ7X01ZeQNrkhkoIX30BW/Q=; b=qUZiAVklUCO18QCNkhwL0e9teDIGQNAYvGF4JVyJ2gVBAjT4SgVbzRQF8XDMcZvI19 pY+wqYEB2kBxwgO40z0zh9BCfNQxHwAbeumpmGCKw+B+II7qnJpktyFFuOqQDk7fbzog Ra7YGsqiOaclxXxTZTSVcSKgk3aoOMisFeEWg= MIME-Version: 1.0 Received: by 10.231.8.197 with SMTP id i5mr2579192ibi.27.1316722521934; Thu, 22 Sep 2011 13:15:21 -0700 (PDT) Received: by 10.231.207.78 with HTTP; Thu, 22 Sep 2011 13:15:21 -0700 (PDT) In-Reply-To: <433A1E6B2B1A4FA895223B81346E0F1C@HughLaptop> References: <000a01cc7942$09fbef90$0401a8c0@xphd97xgq27nyf> <433A1E6B2B1A4FA895223B81346E0F1C@HughLaptop> Date: Thu, 22 Sep 2011 21:15:21 +0100 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Re: Turbine magnets Content-Type: multipart/alternative; boundary=00151773ea68300b8904ad8d5a01 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:485767872:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40554e7b97b44151 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --00151773ea68300b8904ad8d5a01 Content-Type: text/plain; charset=ISO-8859-1 Surely if the magnetic field leaked that much, the generators would suffer efficiency. They are designed as closed magnetic circuits, with all the field lines closely confined in iron, with small air gaps Andy 'jnt On 22 September 2011 21:07, Hugh M0WYE wrote: > ** > Seems unlikely that the magnetism would reach that far to me - the magnetic > field would be no different to any other large generating set - they are > just an ordinary alternator driven through a gearbox. > If they did affect magnetic compasses you would have thought that the place > you would really notice it would be around the coast, with small boats > sailing in amongst them. > Although they look as if they are turning slowly, they can't do many rpm > before the tips of the blades go supersonic, as the blades are many 10s of > metres long. > Over what distance did you notice the magnetic effect? perhaps I could get > down to the ones on Romney Marsh, here in Kent and see if they have any > effect on a compass needle. > > The moving blades can affect radio reception for people living nearby, > although I've not noticed this myself. > > 73 > Hugh M0WYE > > ----- Original Message ----- > *From:* mal hamilton > *To:* rsgb > *Sent:* Thursday, September 22, 2011 5:09 PM > *Subject:* LF: Turbine magnets > > Great for LF!!!!!!!!!!!!! > > Experience > > Driving to Gleneagles in Scotland last weekend my car magnetic compass was > reading backwards and erratic and I wondered why. > The hills es mountain tops are covered with WIND TURBINES, hugh beasts and > only turning slowly, cannot be producing much electric. > however thinking about it I have concluded that the strong MAGNETS in the > turbines must effect a magnetic compass, possible aeroplanes as well except > they are flying very high, might also have an influence on GPS frequencies > and navigation in these areas > I must say these hugh Monsters strewn all across the Scottish mountain tops > and countryside spoils the scenery. > de Mal/G3KEV > > > --00151773ea68300b8904ad8d5a01 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Surely if the magnetic field leaked that much, the generators would su= ffer efficiency.=A0=A0
They are designed as closed magnetic circuits, with all the field line= s closely confined in iron, with small air gaps
=A0
Andy
'jnt


=A0
On 22 September 2011 21:07, Hugh M0WYE <m0wye@radiouk.com>= wrote:
Seems unlikely that the magnetism woul= d reach that far to me - the magnetic field would be no different to any ot= her large generating set - they are just an ordinary alternator driven thro= ugh a gearbox.
If they did affect magnetic compasses = you would have thought that the place you would really notice it would be a= round the coast, with small boats sailing in amongst them.
Although they look as if they are turn= ing slowly, they can't do many rpm before the tips of the blades go sup= ersonic, as the blades are many 10s of metres long.
Over what distance did you notice the = magnetic=A0effect? perhaps I could get down to the ones on Romney Marsh, he= re in Kent and see if=A0they have any effect on a compass needle.
=A0
The moving blades can affect radio rec= eption for people living nearby, although I've not noticed this myself.=
=A0
73
Hugh M0WYE
----- Original Message -----
To: rs= gb
Sent: Thursday, September 22, 2011 5= :09 PM
Subject: LF: Turbine magnets

Great for LF!!!!!!!!!!!!!
=A0
Experience
=A0
Driving to Gleneagles in Scotland last weekend my= car magnetic compass was reading backwards and erratic and I wondered why.=
The hills es mountain tops are covered with WIND = TURBINES, =A0hugh beasts and only turning slowly, cannot be producing much = electric.
however thinking about it I have concluded that t= he strong=A0MAGNETS in the turbines=A0must=A0effect a magnetic compass, =A0= possible aeroplanes as well except they are flying very=A0high, might also = have an influence on GPS=A0frequencies and navigation in these areas=
I must say these hugh Monsters strewn all across = the Scottish mountain tops and countryside=A0spoils the scenery.
=A0de Mal/G3KEV
=A0
<= /div>
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