Return-Path: Received: from mtain-dc09.r1000.mx.aol.com (mtain-dc09.r1000.mx.aol.com [172.29.64.137]) by air-df07.mail.aol.com (v129.4) with ESMTP id MAILINDF073-5efc4c19f6dc2d7; Thu, 17 Jun 2010 06:20:12 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dc09.r1000.mx.aol.com (Internet Inbound) with ESMTP id 7EB8038002B45; Thu, 17 Jun 2010 06:20:09 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OPCB8-0001XT-EA for rs_out_1@blacksheep.org; Thu, 17 Jun 2010 11:18:34 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OPCB7-0001XK-Ul for rsgb_lf_group@blacksheep.org; Thu, 17 Jun 2010 11:18:33 +0100 Received: from relay01a.mail.uk1.eechost.net ([217.69.40.75] helo=relay03.mail.uk1.eechost.net) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OPCB4-0002aN-Uy for rsgb_lf_group@blacksheep.org; Thu, 17 Jun 2010 11:18:33 +0100 Received: from [88.151.27.236] (helo=TonyLaptop) by relay03.mail.uk1.eechost.net with esmtpa (Exim 4.68) (envelope-from ) id 1OPCAl-0002rC-DY for rsgb_lf_group@blacksheep.org; Thu, 17 Jun 2010 11:18:11 +0100 Message-ID: From: "Tony Baldwin" To: References: <648287CF-49D0-4E2E-BCE5-B20F634C9384@numeo.fr> <569132.43932.qm@web81107.mail.mud.yahoo.com> <4C19DD25.4070109@gmx.com> In-Reply-To: Date: Thu, 17 Jun 2010 11:18:15 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MIMEOLE: Produced By Microsoft MimeOLE V6.0.6002.18197 X-Auth-Info: 3810@permanet.ie (login) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: RE: Who needs antennas! - success with ground electrodes on500kHz Content-Type: multipart/alternative; boundary="----=_NextPart_000_00AF_01CB0E0E.C7ED74B0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.0 required=5.0 tests=HTML_30_40, HTML_FONTCOLOR_UNSAFE,HTML_MESSAGE,MISSING_OUTLOOK_NAME 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-sid: 3039ac1d40894c19f6d92ff5 X-AOL-IP: 193.82.116.20 ------=_NextPart_000_00AF_01CB0E0E.C7ED74B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I will leave mine on overnight, although it would be a miracle if you= made it this far on my mediocre set up. I might also lay some wire out and make an "earth antenna" too. I'm reasonably new to the group, just re-registered, although I did lu= rk in the background last winter. The intention is to get myself a better setup for the winter months an= d build myself a transmitter for 136 and maybe have some fun along the= way. Station location is fairly close to Mizen Head, the opposite end of Ir= eland to Finbarr (extreme SW), in IO51DN. In the meantime I will continue to "lurk" 73, Tony, EI8JK. ----- Original Message -----=20 From: Roger Lapthorn=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Thursday, June 17, 2010 9:56 AM Subject: Re: LF: RE: Who needs antennas! - success with ground elect= rodes on500kHz Folks, Well I need to do an estimate of ERP with the "earth antenna", so wi= ll try to measure this in the coming days. Jusging by reports so far= the system is about 6-10dB down on my top loaded vertical antenna. Th= e power from the transverter is 5W still but with the vertical the ERP= was only around 1mW (calculated and measured). So, at a first guess,= the ERP is probably around 200uW but perhaps with directivity because= of the loop action. Rik, I could run it overnight tonight if you like to see who can cop= y me. Anyone else willing and able to listen overnight tonight please? 73s Roger G3XBM On 17 June 2010 09:30, Mike-WE0H wrote: 3 watts into my 600 meter 70' vertical gets me easy CW copy at 100= miles in daylight. If you can get a bit over 100 miles with 5 watts= CW in daylight with that Earth Electrode antenna, then you know it wo= rks damn good. Mike WE0H --=20 http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 ------=_NextPart_000_00AF_01CB0E0E.C7ED74B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I will leave mine on overnight, altho= ugh it would=20 be a miracle if you made it this far on my mediocre set up.
I might also lay some wire out and ma= ke an "earth=20 antenna" too.
 
I'm reasonably new to the group, just= =20 re-registered, although I did lurk in the background last winter.
The intention is to get myself a bett= er setup for=20 the winter months and build myself a transmitter for 136 and maybe hav= e some fun=20 along the way.
Station location is fairly close to= Mizen Head, the=20 opposite end of Ireland to Finbarr (extreme SW), in IO51DN.
In the meantime I will continue to=20 "lurk"
 
73, Tony, EI8JK.
----- Original Message -----
Sent: Thursday, June 17, 2010= 9:56=20 AM
Subject: Re: LF: RE: Who need= s antennas!=20 - success with ground electrodes on500kHz

Folks,

Well I need to do an estimate of ERP= with the=20 "earth antenna", so will try to measure this in the coming days. Jus= ging by=20 reports so far the system is about 6-10dB down on my top loaded vert= ical=20 antenna. The power from the transverter is 5W still but with the ver= tical the=20 ERP was only around 1mW (calculated and measured). So, at a first gu= ess, the=20 ERP is probably around 200uW but perhaps with directivity because of= the loop=20 action.

Rik, I could run it overnight tonight if you like to= see who=20 can copy me. Anyone else willing and able to listen overnight tonigh= t=20 please?

73s
Roger G3XBM




On 17 June 2010 09:30, Mike-WE0H <we0h@gmx.com> wrote:
3= watts into my 600 meter 70' vertical gets me easy CW=20 copy at 100 miles in daylight. If you can get a bit over 100 miles= with 5=20 watts CW in daylight with that Earth Electrode antenna, then you= know it=20 works damn good.

Mike
WE0H
=



--=20
http://g3xbm-qrp.= blogspot.com/
http://www= .g3xbm.co.uk
= http://www.youtube.com/user/g3xbm
G3XBM=20    GQRP 1678      ISWL=20 G11088
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