Return-Path: Received: from rly-me08.mx.aol.com (rly-me08.mail.aol.com [172.20.83.42]) by air-me10.mail.aol.com (v125.7) with ESMTP id MAILINME104-9d04ae619e2190; Mon, 26 Oct 2009 17:51:40 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-me08.mx.aol.com (v125.7) with ESMTP id MAILRELAYINME084-9d04ae619e2190; Mon, 26 Oct 2009 17:51:32 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1N2XSf-0007Bh-6G for rs_out_1@blacksheep.org; Mon, 26 Oct 2009 21:50:45 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1N2XSe-0007BY-Kf for rsgb_lf_group@blacksheep.org; Mon, 26 Oct 2009 21:50:44 +0000 Received: from mail-bw0-f223.google.com ([209.85.218.223]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1N2XQx-00036i-PL for rsgb_lf_group@blacksheep.org; Mon, 26 Oct 2009 21:49:00 +0000 Received: by bwz23 with SMTP id 23so2605969bwz.29 for ; Mon, 26 Oct 2009 14:50:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=Ge3kDCeIAlN0NioB/xmzeqkwSVKdSXLwUF2hxD+LUEs=; b=KEHfMUJqX866SsptOqz7hyxq7SM26Jg7V8TLTfSbWvY04QdR5B8kKmrWAxvkFe7QaS c4wdSExiH01rhxsXuIiSXBVK34bsPTn3peShJyK9GdVZTMj3ohmFWJy70S5z+vLc9+Sc tIm3en4rKWgnro5127utCf9pe98Z9cJPl3OwM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=aWErtcL3e9+RCWIJWahb7poNYI1xI084FDxPtalIxVkV+qgjeElVaTYbxdDBkA37Vj PQDJ1Qpeg2rVDQXO9JQdrYfElTkceZ1kIyzlFyrSCcOtD2QW8Dgj58zlnoqtsLNQQkrx SPNxEmh6kh7t3egtaWocVgcmZY8l7/vDlacQw= MIME-Version: 1.0 Received: by 10.204.23.203 with SMTP id s11mr90864bkb.17.1256593824166; Mon, 26 Oct 2009 14:50:24 -0700 (PDT) In-Reply-To: <022c01ca5682$3402b3d0$0201a8c0@Clemens04> References: <9afca2640910240855l4ad81f57sc7247c1c78a1365f@mail.gmail.com> <01b401ca54e1$5b318ff0$0201a8c0@Clemens04> <9afca2640910241450r8b210ebjce5cb66370592926@mail.gmail.com> <041d01ca5588$beeeba70$0201a8c0@Clemens04> <9afca2640910250902j735e3919gf3fdfc8f43aba270@mail.gmail.com> <004d01ca559d$e9851580$0201a8c0@Clemens04> <9afca2640910251134o1ab2bb34r31410f6da0b5c142@mail.gmail.com> <022c01ca5682$3402b3d0$0201a8c0@Clemens04> Date: Mon, 26 Oct 2009 21:50:24 +0000 Message-ID: <9afca2640910261450y10b3b80ds79a681d1ce176d6c@mail.gmail.com> From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org X-Karma: unknown: DomainKey-Status: good (testing) X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,HTML_TAG_EXIST_TBODY=0.126 Subject: Re: LF: 500kHz G4NT WSPR beaconing Content-Type: multipart/alternative; boundary=000325559f1a8434d60476dd8c36 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY 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 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d251.1 ; domain : gmail.com DKIM : pass X-Mailer: Unknown (No Version) --000325559f1a8434d60476dd8c36 Content-Type: text/plain; charset=ISO-8859-1 Thanks Clemens. Yes, I think you are right and I need to significantly reduce the losses in my antenna and ground system next. I cannot start this now for several days (grandchildren here with us) but hope to start on this next week. My theoretical calculations suggest the ground losses must be very high and the effective height of my (very short) MF antenna very small. Improvements to my ground system yesterday (a few short radials and a second ground spike) did not make any different to the antenna current suggesting other factors/losses may be masking these improvements. So far I have had reports now from 18 different stations in 4 countries with GM4SLV the best DX at 896kms (several times). I think John must have a very quiet QTH up in the Shetland Isles. Thanks again for listening and before long I hope you manage to hear me. 73s Roger G3XBM http://g3xbm-qrp.blogspot.com/ 2009/10/26 Clemens Paul > Roger, > > Sri,no copy last evening. > Only G4JNT (1055km) and G0NBD (1245km) . > I didn't see even a faint trace on my Perseus SDR. > From my experience I know that I can decode WSPR sigs > even if they are very weakly visible on Perseus > but what I can't see I can't decode. > I believe at least ~10dB more are necessary to reach central Europe. > > 73 > Clemens > DL4RAJ > > ----- Original Message ----- > *From:* Roger Lapthorn > *To:* rsgb_lf_group@blacksheep.org > *Sent:* Sunday, October 25, 2009 7:34 PM > *Subject:* Re: LF: 500kHz G4NT WSPR beaconing > > Let us hope you manage to hear my signal too later in the evening Clemens. > > 73s > Roger G3XBM > > 2009/10/25 Clemens Paul > >> 2009-10-25 18:00 G4JNT 0.503850 +12 0 IO90iv 0.2 DL4RAJ >> JN68kj 1055 100 >> >> This evening looks promising. >> >> 73 >> Clemens >> DL4RAJ >> > > > > -- > ------------------------------------------------------------- > http://g3xbm-qrp.blogspot.com/ > http://www.g3xbm.co.uk > G3XBM GQRP 1678 ISWL G11088 > > ------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.423 / Virus Database: 270.14.31/2457 - Release Date: 10/24/09 > 14:31:00 > > -- ------------------------------------------------------------- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk G3XBM GQRP 1678 ISWL G11088 --000325559f1a8434d60476dd8c36 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Thanks Clemens.

Yes, I think you are right and I need to significa= ntly reduce the losses in my antenna and ground system next. I cannot star= t this now for several days (grandchildren here with us) but hope to start= on this next week.=A0 My theoretical calculations suggest the ground loss= es must be very high and the effective height of my (very short) MF antenn= a very small. Improvements to my ground system yesterday (a few short radi= als and a second ground spike) did not make any different to the antenna= current suggesting other factors/losses may be masking these improvements= .

So far I have had reports now from 18 different stations in 4 countrie= s with GM4SLV the best DX at 896kms (several times). I think John must hav= e a very quiet QTH up in the Shetland Isles.

Thanks again for liste= ning and before long I hope you manage to hear me.

73s
Roger G3XBM
http:= //g3xbm-qrp.blogspot.com/



20= 09/10/26 Clemens Paul <cpaul@gmx.net>
Roger,
=A0
Sri,no copy last evening.
Only G4JNT (1055km) and G0NBD (1245km= )=20 .
I didn't see even a faint trace= on my Perseus=20 SDR.
From my experience I know that I can= decode WSPR=20 sigs
even if they are=A0very weakly=A0visi= ble on=20 Perseus
but=A0what I can't see I can'= t=20 decode.
I believe at least ~10dB=A0more are= necessary to=20 reach=A0central Europe.
=A0
73
Clemens
DL4RAJ
----- Original Message -----
Sent:= Sunday, October 25, 2009 7:34=20 PM
Subject: Re: LF: 500kHz G4NT WS= PR=20 beaconing

Let us hope you= manage to hear my signal too later in the=20 evening Clemens.

73s
Roger G3XBM

2009/10/25 Clemens Paul <= ;cpaul@gmx.net><= /span>
=A02009-10-25 18:00=A0 =A0G4JNT=A0 =A00.503850=A0 =A0+12=A0 =A00=A0 =A0IO90iv=A0 =A00.2=A0 =A0DL4RAJ=A0 =A0JN68kj=A0 =A01055=A0 =A0100=A0
=A0
This evening looks promising.
=A0
73
Clemens
DL4RAJ



--=20
-------------------------------------------------------------
http://g3xbm-qr= p.blogspot.com/
http://www.g3xbm.co.uk
G3XBM =A0=20 =A0GQRP 1678 =A0 =A0 =A0ISWL G11088


No virus found in this incoming message.
Checked by AVG -= =20 www.avg.com
Version: 8.5.423 / Virus Database: 270.14.31/2457 - Release=20 Date: 10/24/09 14:31:00



--
----------------------= ---------------------------------------
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
G3XBM =A0 =A0GQRP 1678 =A0 =A0 =A0ISWL G11088
--000325559f1a8434d60476dd8c36--