Return-Path: Received: from rly-mh09.mx.aol.com (rly-mh09.mail.aol.com [172.21.166.145]) by air-mh02.mail.aol.com (v121_r5.5) with ESMTP id MAILINMH021-bf349a82ded3; Fri, 27 Feb 2009 13:16:22 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mh09.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINMH093-bf349a82ded3; Fri, 27 Feb 2009 13:16:15 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Ld7Fr-0006oR-4p for rs_out_1@blacksheep.org; Fri, 27 Feb 2009 18:16:11 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Ld7Fq-0006oI-P1 for rsgb_lf_group@blacksheep.org; Fri, 27 Feb 2009 18:16:10 +0000 Received: from ttsmtp-2.cpwnetworks.com ([62.24.128.243] helo=ttsmtp.cpwnetworks.com) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Ld7Fq-0003EB-4V for rsgb_lf_group@blacksheep.org; Fri, 27 Feb 2009 18:16:10 +0000 X-Path: TalkTalk-smtp X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AqYGAHO8p0lOkJDF/2dsb2JhbACCXIFkhxQGy2+EFAY Received: from unknown (HELO mal769a60aa920) ([78.144.144.197]) by ttsmtp.cpwnetworks.com with SMTP; 27 Feb 2009 18:16:03 +0000 Message-ID: <003e01c99907$73421060$0301a8c0@mal769a60aa920> From: "mal hamilton" To: "rsgb" Date: Fri, 27 Feb 2009 18:16:02 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Karma: unknown: X-Spam-Score: 1.3 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RCVD_IN_BL_SPAMCOP_NET=1.332 Subject: LF: Ground system Content-Type: multipart/alternative; boundary="----=_NextPart_000_003B_01C99907.72DDF760" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,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-IP: 193.82.116.20 ------=_NextPart_000_003B_01C99907.72DDF760 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MF A couple of elevated insulated radials will out perform dozens of buried rad= ials, in fact 1 radial is vy effective, even insulated radials lying above g= round are also efficient.=20 I use 2 insulated 1/4 wave elevated radials on 500 khz and several lying on=20= the ground for 137 khz. Using a loading coil in an elevated position on a vertical helps but remembe= r twice as many turns are required as opposed to base loading hence more res= istance, you might not be gaining as much advantage as you think. de mal/g3kev ------=_NextPart_000_003B_01C99907.72DDF760 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

A couple of elevated insulated radials will= out=20 perform dozens of buried radials, in fact 1 radial is vy effective, even=20 insulated radials lying above ground are also efficient.

I use 2 insulated 1/4 wave elevated radials= on 500=20 khz and several lying on the ground for 137 khz.

Using a loading coil in an elevated positio= n on a=20 vertical helps but remember twice as many turns are required as opposed to b= ase=20 loading hence more resistance, you might not be gaining as much advantage as= you=20 think.

de mal/g3kev

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