Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mk06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 2B8F03800008D; Sun, 6 Jan 2013 12:54:51 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TruFj-0001Dq-TC for rs_out_1@blacksheep.org; Sun, 06 Jan 2013 17:43:19 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TruFj-0001Dh-Bo for rsgb_lf_group@blacksheep.org; Sun, 06 Jan 2013 17:43:19 +0000 Received: from smtpout3.wanadoo.co.uk ([80.12.242.59] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1TruFf-00027c-R4 for rsgb_lf_group@blacksheep.org; Sun, 06 Jan 2013 17:43:18 +0000 Received: from AGB ([2.26.46.248]) by mwinf5d35 with ME id khiu1k00l5MGj1N03hiunj; Sun, 06 Jan 2013 18:42:55 +0100 Message-ID: <6BB1547C1F2041AC9F53361E123A7233@AGB> From: "Graham" To: References: In-Reply-To: Date: Sun, 6 Jan 2013 17:42:54 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: R, I thought it was established that the ground did not 'exist' for some 20/40 feet or more from the surface and as such, your using a loop with the bottom wire 40 feet lower than the top wire ? This was the principal of ground lying Ae .would not work on salt marshes , but for normal ground , lossey but capable of supporting radiation ? [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.59 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: ab7de7439a3fce0b74220375dc6f18e8 Subject: Re: LF: 472kHz TX without an antenna: it gets better (701km with around 5mW ERP) Content-Type: multipart/alternative; boundary="----=_NextPart_000_01AC_01CDEC35.41BA90A0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,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: 3039ac1d618a50e9ba6b380c X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_01AC_01CDEC35.41BA90A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable R, I thought it was established that the ground did not 'exist' = for some 20/40 feet or more from the surface and as such, your = using a loop with the bottom wire 40 feet lower than the top = wire ? This was the principal of ground lying Ae .would not work on = salt marshes , but for normal ground , lossey but capable of = supporting radiation ? G.. From: Roger Lapthorn=20 Sent: Sunday, January 06, 2013 5:28 PM To: rsgb_lf_group@blacksheep.org ; rsgb_lf_group@yahoogroups.co.uk=20 Subject: LF: 472kHz TX without an antenna: it gets better (701km with = around 5mW ERP) OK, now I am totally amazed.... Just got a WSPR spot from DL-SWL in Germany (JO52hp) at 701km using just = the earth electrode system on TX. Please someone, explain why this works = as well as it does, especially considering my ERP must be around 5mW at = best.=20 Incidentally G3XIZ is a colossal +7dB S/N on WSPR and I think Chris = would be easily workable on CW using the earth electrode system. 73s Roger G3XBM --=20 http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk https://sites.google.com/site/sub9khz/ http://qss2.blogspot.com/ ------=_NextPart_000_01AC_01CDEC35.41BA90A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
R,
 
I thought  it  was  established  that  = the =20 ground  did  not  'exist'  for  some  = 20/40 =20 feet  or more from the  surface  and  as  such, = your  using a  loop  with the  bottom  = wire  =20 40  feet  lower than the  top  wire ?
 
This was the  principal  of  ground = lying  =20 Ae  .would  not  work  on  salt marshes  , = but  for  normal  ground , lossey but  capable  = of  supporting  radiation ?
 
G..

Sent: Sunday, January 06, 2013 5:28 PM
To: rsgb_lf_group@blacksheep.org= ; rsgb_lf_group@yahoogroups= .co.uk=20
Subject: LF: 472kHz TX without an antenna: it gets better = (701km=20 with around 5mW ERP)

OK, now I am totally amazed....

Just got a WSPR spot = from=20 DL-SWL in Germany (JO52hp) at 701km using just the earth electrode = system on TX.=20 Please someone, explain why this works as well as it does, especially=20 considering my ERP must be around 5mW at best.

Incidentally G3XIZ is a colossal +7dB S/N on WSPR and I think Chris = would=20 be easily workable on CW using the earth electrode system.

73s
Roger G3XBM

--
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
https://sites.google.com/site/sub9khz/
http://qss2.blogspot.com/

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