Return-Path: Received: (qmail 50360 invoked from network); 10 Nov 2004 13:01:44 -0000 Received: from unknown (HELO ptb-spamcore02.plus.net) (192.168.71.3) by ptb-mailstore01.plus.net with SMTP; 10 Nov 2004 13:01:44 -0000 Received: from mailnull by ptb-spamcore02.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1CRs4f-000HF8-Jf for dave@picks.force9.co.uk; Wed, 10 Nov 2004 12:59:46 +0000 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore02.plus.net with esmtp (Exim 4.32; FreeBSD) id 1CRs4f-000HF5-DA for dave@picks.force9.co.uk; Wed, 10 Nov 2004 12:59:45 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1CRs6Z-000BwY-H4 for dave@picks.force9.co.uk; Wed, 10 Nov 2004 13:01:43 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1CRs66-0006ge-Rx for rs_out_1@blacksheep.org; Wed, 10 Nov 2004 13:01:14 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1CRs66-0006gV-EQ for rsgb_lf_group@blacksheep.org; Wed, 10 Nov 2004 13:01:14 +0000 Received: from smtp1.freeserve.com ([193.252.22.158] helo=mwinf3003.me.freeserve.com) by relay.thorcom.net with esmtp (Exim 4.41) id 1CRs5z-0006jf-Gv for rsgb_lf_group@blacksheep.org; Wed, 10 Nov 2004 13:01:14 +0000 Received: by mwinf3003.me.freeserve.com (SMTP Server, from userid 1003) id 880481800083; Wed, 10 Nov 2004 14:00:59 +0100 (CET) Received: from wwinf3002 (wwinf3002 [172.22.159.29]) by mwinf3003.me.freeserve.com (SMTP Server) with ESMTP id 6E8F21800082 for ; Wed, 10 Nov 2004 14:00:59 +0100 (CET) Message-ID: <2419000.1100091659425.JavaMail.www@wwinf3002> From: Lawrence Mayhead G3AQC To: rsgb_lf_group@blacksheep.org Mime-Version: 1.0 X-Originating-IP: [81.153.24.53] Date: Wed, 10 Nov 2004 14:00:59 +0100 (CET) X-SPF-Result: relay.thorcom.net: 193.252.22.158 is neither permitted nor denied by domain of g3aqc.freeserve.co.uk X-Spam-Score: 3.9 (+++) X-Spam-Report: autolearn=no,HTML_MESSAGE=0.001,MIME_HTML_NO_CHARSET=0.716,RAZOR2_CF_RANGE_11_50=0.559,RAZOR2_CHECK=0.899,RCVD_IN_SORBS=0.1,SARE_RECV_SPAM_DOMN0a=1.666 Subject: Re: LF: Loading coil - suggestions Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.7 required=5.0 tests=HTML_MESSAGE, MIME_HTML_NO_CHARSET 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-Spam-Filtered: by PlusNet SpamCORE (v3.00) Content-transfer-encoding: 8bit

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Message date : Nov 10 2004, 12:44 PM
From : "OSBORN, Chris"
To : "LF Group (E-mail)"
Copy to :
Subject : LF: Loading coil - suggestions

I've just spent some time constructing a new 136 kHz aerial loading
coil and the results are most disappointing.
.
It is of basket weave construction on a 7 pointed dowelled wooden
former with a mean diameter of about 20 inches.
The wire is the same gauge as my old 'brewing bin' coil yet the Q is
lower and the aerial current correspondingly down.

The plastic R/S 4mm (tapping) terminals are well insulated on
perspex strips and I was expecting great things of it.

Can anyone suggest where I've gone wrong ?

My earlier E-mail to the group vanished - perhaps I should not have
included a .bmp attachment !

73

Chris G3XIZ

Hi Chris, I think your problem is the wooden dowels ! I made a loading coil with dowels and like you was very dissapointed with the results.Can you get hold of some tufnel or SRBP rods ,or use some form of plastic.

73 Laurie G3aqc.
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