X-GM-THRID: 1237170201449359626 X-Gmail-Labels: rsgb lf Delivered-To: daveyxm@gmail.com Received: by 10.78.172.1 with SMTP id u1cs280843hue; Tue, 22 May 2007 11:10:47 -0700 (PDT) Received: by 10.67.121.18 with SMTP id y18mr755245ugm.1179857446383; Tue, 22 May 2007 11:10:46 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id k2si1134006ugf.2007.05.22.11.10.44; Tue, 22 May 2007 11:10:46 -0700 (PDT) Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1HqYln-0007zP-5G for rs_out_1@blacksheep.org; Tue, 22 May 2007 19:07:39 +0100 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1HqYlm-0007zF-HY for rsgb_lf_group@blacksheep.org; Tue, 22 May 2007 19:07:38 +0100 Received: from smtpout0162.sc1.he.tucows.com ([64.97.136.162] helo=n082.sc1.he.tucows.com) by relay2.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1HqYli-0007qO-OB for rsgb_lf_group@blacksheep.org; Tue, 22 May 2007 19:07:38 +0100 Received: from g3kev (62.252.204.239) by n082.sc1.he.tucows.com (7.2.069.1) id 4630CFCB0020BC7B for rsgb_lf_group@blacksheep.org; Tue, 22 May 2007 18:07:28 +0000 Message-ID: <004a01c79c9c$0fbd6490$3be8fc3e@g3kev> From: "hamilton mal" To: References: <88d2415e0705220715u327d7c9ar38fed036271fcdf7@mail.gmail.com> Date: Tue, 22 May 2007 17:54:44 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Spam-Score: -0.5 (/) X-Spam-Report: autolearn=disabled,AWL=-0.545,HTML_MESSAGE=0.001 Subject: LF: Re: 500kHz Distance Content-Type: multipart/alternative; boundary="----=_NextPart_000_0035_01C79C9A.476DBFE0" 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 Status: O X-Status: X-Keywords: X-UID: 1957 This is a multi-part message in MIME format. ------=_NextPart_000_0035_01C79C9A.476DBFE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable This is correct Laurie and if you cannot get it into the air as high as = possible, put the radials (insulated) on top of the ground. I use only 2 = radials on 500 elevated 7 feet above ground, ie GP The old myth about buried radials is long gone, bare wire buried in the = ground has to overcome ground losses for return currents, making a bad = situation even WORSE!!!!!!!!!!!! ----- Original Message -----=20 From: lawrence mayhead=20 To: rsgb=20 Sent: Tuesday, May 22, 2007 2:15 PM Subject: LF: 500kHz Distance I am very encouraged by the response to my comments on our erp limit. Regarding ground loss, the best way to reduce this is not to bury wire in the ground but to put it in the air ! 1 metre of wire in the = air=20 is worth 10 in the ground, and it does'nt have to be in a straight = line either just so long as it covers new ground as it were. My 136 now 500kHz ant has 600 feet of top load in 3 zig zags and I get about 30 ohms resistance on 136 and about 15 ohms on 500. So I dont need many watts to get 0.5 amps int the vert section.=20 73 Laurie G3AQC=20 ------=_NextPart_000_0035_01C79C9A.476DBFE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
This is correct Laurie and if you = cannot get it=20 into the air as high as possible, put the radials (insulated) on top of = the=20 ground. I use only 2 radials on 500 elevated 7 feet above ground, ie=20 GP
The old myth about buried radials is = long gone,=20 bare wire buried in the ground has to overcome ground losses for return=20 currents, making a bad situation even WORSE!!!!!!!!!!!!
 
 
----- Original Message -----
From:=20 lawrence mayhead =
To: rsgb
Sent: Tuesday, May 22, 2007 = 2:15 PM
Subject: LF: 500kHz = Distance

I am very encouraged by the response to my comments on=20 our
erp limit.
Regarding ground loss, the best way to reduce = this is not=20 to bury
wire in the ground but to put it in the air !  1 metre = of wire=20 in the air
is worth 10 in the ground, and it does'nt have to be in = a=20 straight line
either just so long as it covers new ground as it = were. My=20 136 now
500kHz ant has 600 feet of top load in 3 zig zags and I get = about=20 30
ohms resistance on 136 and about 15 ohms on 500. So I dont = need
many=20 watts to get  0.5 amps int the vert section.
73 Laurie G3AQC=20
------=_NextPart_000_0035_01C79C9A.476DBFE0--