Return-Path: Received: from mtain-dj08.r1000.mx.aol.com (mtain-dj08.r1000.mail.aol.com [172.19.187.144]) by air-de02.mail.aol.com (v129.4) with ESMTP id MAILINDE023-5ea84c1a5e2d27f; Thu, 17 Jun 2010 13:41:01 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dj08.r1000.mx.aol.com (Internet Inbound) with ESMTP id 9D00038000860; Thu, 17 Jun 2010 13:40:58 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OPJ4F-00037S-6i for rs_out_1@blacksheep.org; Thu, 17 Jun 2010 18:39:55 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OPJ4E-00037J-JM for rsgb_lf_group@blacksheep.org; Thu, 17 Jun 2010 18:39:54 +0100 Received: from out1.ip04ir2.opaltelecom.net ([62.24.128.240]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OPJ4B-0003P9-Ev for rsgb_lf_group@blacksheep.org; Thu, 17 Jun 2010 18:39:54 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: As8PAEf7GUxOke3n/2dsb2JhbACBQ4kSlCJxuBiJI4UaBA X-IronPort-AV: E=Sophos;i="4.53,432,1272841200"; d="scan'208,217";a="294650574" Received: from unknown (HELO laptopcore2) ([78.145.237.231]) by out1.ip04ir2.opaltelecom.net with ESMTP; 17 Jun 2010 18:39:39 +0100 From: "g3zjo" To: Date: Thu, 17 Jun 2010 18:39:38 +0100 Message-ID: <000e01cb0e44$0f8b8d40$0202a8c0@laptopcore2> MIME-Version: 1.0 X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2616 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670 Importance: Normal In-Reply-To: <003f01cb0e38$ff39b300$0301a8c0@your91hoehfy9g> 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_000F_01CB0E4C.71572130" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=HTML_60_70, HTML_FONTCOLOR_UNKNOWN,HTML_FONTCOLOR_UNSAFE,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-global-disposition: G x-aol-sid: 3039cdbc9d0d4c1a5e2a2d0d X-AOL-IP: 193.82.116.20 ------=_NextPart_000_000F_01CB0E4C.71572130 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit My 500kHz WSPR TX is off, now listening on my Marconi T in readiness for G3XBM test Eddie G3ZJO IO92ng -----Original Message----- From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of mal hamilton Sent: 17 June 2010 17:20 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: RE: Who needs antennas! - success with ground electrodes on500kHz Tony I am QRV on 137 and 500. I will be on both band later tonite around 1900utc. Normal CW on 502.6 and 137. You should hear me. 73 de mal/g3kev ----- Original Message ----- From: Tony Baldwin To: rsgb_lf_group@blacksheep.org Sent: Thursday, June 17, 2010 11:18 AM Subject: Re: LF: RE: Who needs antennas! - success with ground electrodes on500kHz 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 lurk in the background last winter. The intention is to get myself a better setup for the winter months and 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 Ireland to Finbarr (extreme SW), in IO51DN. In the meantime I will continue to "lurk" 73, Tony, EI8JK. ----- Original Message ----- From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org Sent: Thursday, June 17, 2010 9:56 AM Subject: Re: LF: RE: Who needs antennas! - success with ground electrodes on500kHz Folks, Well I need to do an estimate of ERP with the "earth antenna", so will 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. The 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 copy 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 works damn good. Mike WE0H -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 ------=_NextPart_000_000F_01CB0E4C.71572130 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

My 500kHz WSPR= TX is off, now listening on my Marconi T in readiness for G3XBM test

 

Eddie G3Z= JO IO92ng

 

-----Original Message-----
From: owner-rsgb_lf_gro= up@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of mal hamilton
Sent: 17 June 2010 17:2= 0
To: rsgb_lf_group@black= sheep.org
Subject: Re: LF: RE: Wh= o needs antennas! - success with ground electrodes on500kHz

 

Tony

I am QRV= on 137 and 500. I will be on  both band later tonite around 1900utc. Normal CW on 502.6 and= 137. You should hear me.

73 de mal/= g3kev

 

----- Orig= inal Message -----

<= b>From: Tony Baldwin

Sent: Thursday, June 17, 2010 11:18 AM

Subject: Re: LF: RE: Who needs antennas! - success with ground electrodes on500kHz

 

I will lea= ve mine on overnight, although it would be a miracle if you made it this far on my mediocre= set up.

I might al= so lay some wire out and make an "earth antenna" too.

 

I'm reason= ably new to the group, just re-registered, although I did lurk in the background last winter.=

The intent= ion is to get myself a better setup for the winter months and build myself a transmitter for= 136 and maybe have some fun along the way.

Station lo= cation is fairly close to Mizen Head, the opposite end of Ireland to Finbarr (extreme SW), in IO= 51DN.

In the mea= ntime I will continue to "lurk"

 

73, Tony,= EI8JK.

----- Orig= inal Message -----

<= b>From: = Roger Lapthorn

Sent: Thursday, June 17, 2010 9:56 AM

Subject: Re: LF: RE: Who needs antennas! - success with ground electrodes on500kHz

 

Folks,

Well I need to do an estimate of ERP with the "earth antenna", so= will try to measure this in the coming days. Jusging by reports so far the syst= em is about 6-10dB down on my top loaded vertical antenna. The power from th= e 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 copy= me. Anyone else willing and able to listen overnight tonight please?

73s
Roger G3XBM



On 17 June 2010= 09:30, Mike-WE0H <we0h@gmx.com> wro= te:

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 dayli= ght with that Earth Electrode antenna, then you know it works damn good.

Mike
WE0H




--
http://g3xbm-qrp.blogspot.c= om/
http://www.g3xbm.co.uk
http://www.youtube.com/u= ser/g3xbm
G3XBM    GQRP 1678      ISWL G11088

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