Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-ma01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 47B7638000092; Fri, 14 Dec 2012 07:50:10 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TjUhc-0004DA-Nq for rs_out_1@blacksheep.org; Fri, 14 Dec 2012 12:49:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TjUhc-0004D1-54 for rsgb_lf_group@blacksheep.org; Fri, 14 Dec 2012 12:49:20 +0000 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1TjUhZ-0000Rp-MS for rsgb_lf_group@blacksheep.org; Fri, 14 Dec 2012 12:49:19 +0000 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id qBECmujU010794 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 14 Dec 2012 13:48:56 +0100 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id qBECmuY5010141 for ; Fri, 14 Dec 2012 13:48:56 +0100 Message-ID: <50CB2033.4030805@iup.uni-heidelberg.de> Date: Fri, 14 Dec 2012 13:48:51 +0100 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <50C5F9E6.5040204@iup.uni-heidelberg.de> <008201cdd6f2$6698ebe0$6d01a8c0@DELL4> <50C7367B.702@iup.uni-heidelberg.de> <50C74479.3080300@iup.uni-heidelberg.de> <00b001cdd7ae$698afc50$6d01a8c0@DELL4> In-Reply-To: <00b001cdd7ae$698afc50$6d01a8c0@DELL4> X-Spam-Score: -0.7 (/) 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: Warren, Jay, LF, I've been in contact with Martin now. He explained that there was rain after a longer time. This causes power outages in YV regularly. He lives close to the sea so there is a salt layer on the isolators of a HV mains transformer after some time. This causes faults and arcing, which explains the heavy QRM recently seen on his grabber. [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [129.206.100.212 listed in list.dnswl.org] -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: bf14357d5ee2e4a717b88d90ab36122c Subject: Re: LF: Re: WD2XNS in YV Content-Type: multipart/alternative; boundary="------------060406020303020503050708" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.4 required=5.0 tests=HTML_30_40,HTML_MESSAGE, HTML_TITLE_EMPTY 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: 3039ac1d600950cb208216db X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------060406020303020503050708 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id qBECmujU010794 Warren, Jay, LF, I've been in contact with Martin now. He explained that there was rain=20 after a longer time. This causes power outages in YV regularly. He lives=20 close to the sea so there is a salt layer on the isolators of a HV mains=20 transformer after some time. This causes faults and arcing, which=20 explains the heavy QRM recently seen on his grabber. Now the grabber is back and looks quite sensitive. So if you want you=20 can forward this to Bob. 73, Stefan/DK7FC Am 11.12.2012 15:47, schrieb jrusgrove@comcast.net: > Stefan > If you are in contact with Martin maybe you could inform him that=20 > grabber has 'hung'. Think Bob judges 'success' by number of spots X=20 > number of different receiving station ... sort of like contest scoring = ;~) > Jay W1VD WD2XNS WE2XGR/2 > > ----- Original Message ----- > *From:* Stefan Sch=E4fer > *To:* rsgb_lf_group@blacksheep.org > > *Sent:* Tuesday, December 11, 2012 9:34 AM > *Subject:* Re: LF: Re: WD2XNS in YV > > Hi Warren, > > You may also forward the latest email to him, that one which shows > Jay's results and the link to the grabber and so on. > > Tnx, 73, Stefan > > Am 11.12.2012 15:17, schrieb Warren Ziegler: >> Stefan, >> I forwarded your message to Bob W2ZM (WE2XEB, WE2XGR/6) to >> see if wants to try QRSS on 137. >> Bob has had trouble getting signed up with this rsgb list (maybe >> an ISP problem?) so I have been forwarding messages from and to hi= m. >> >> 73 Warren K2ORS >> >> >> >> On Tue, Dec 11, 2012 at 8:34 AM, Stefan Sch=E4fer >> > > wrote: >> >> Jay, LF, >> >> Am 10.12.2012 17:21, schrieb jrusgrove@comcast.net >> : >> >> [...] Care to share the details of the setup? >> >> Jay W1VD WD2XNS WE2XGR/2 >> >> >> Martin has a 80m long wire in maybe 8m above ground. This >> wire is resonated to LF and transformed to the RX input >> impedance by using a ferrite rod. A separate LF earth is >> used. The RX is that one by JA8SCD, >> http://icas.to/lineup/idc-136-kit-eng.htm (also used by >> TF3HZ and DU1GM and others). He also has a tuned loop antenna >> with about 8 square meters cross section area. I guess its >> mostly beaming to NE/SW. Furthermore he built a E-H-combiner >> to optimise the SNR even more. There was a 3 dB improvement >> in some of the tests. >> I don't know exactly what he is using these days but i guess >> the system is not particularly optimised for best US >> reception. Maybe there could be a few dB more S/N... >> >> What about WE2XEB? Is that not a motivating goal for him to >> leave traces in SA, using traditional QRSS or DFCW? He would >> surely make that distance, not to talk about EU receivers... >> >> 73, Stefan/DK7FC >> >> >> >> >> --=20 >> 73 Warren K2ORS >> WD2XGJ >> WD2XSH/23 >> WE2XEB/2 >> WE2XGR/1 >> >> --------------060406020303020503050708 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Warren, Jay, LF,

I've been in contact with Martin now. He explained that there was rain after a longer time. This causes power outages in YV regularly. He lives close to the sea so there is a salt layer on the isolators of a HV mains transformer after some time. This causes faults and arcing, which explains the heavy QRM recently seen on his grabber.

Now the grabber is back and looks quite sensitive. So if you want you can forward this to Bob.

73, Stefan/DK7FC

Am 11.12.2012 15:47, schrieb jrusgrove@comcast.net:
Stefan
 
If you are in contact with Martin maybe you could inform him that grabber has 'hung'. Think Bob judges 'success' by number of spots X number of different receiving station ... sort of like contest scoring ;~)
 
Jay W1VD  WD2XNS  WE2XGR/2 
 
 
----- Original Message -----
Sent: Tuesday, December 11, 2012 9:34 AM
Subject: Re: LF: Re: WD2XNS in YV

Hi Warren,

You may also forward the latest email to him, that one which shows Jay's results and the link to the grabber and so on.

Tnx, 73, Stefan

Am 11.12.2012 15:17, schrieb Warren Ziegler:
Stefan,
    I forwarded your message to Bob W2ZM (WE2XEB, WE2XGR/6) to see if wants to try QRSS on 137.
Bob has had trouble getting signed up with this rsgb list (maybe an ISP problem?) so I have been forwarding messages from and to him.

73 Warren K2ORS



On Tue, Dec 11, 2012 at 8:34 AM, Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de> wrote:
Jay, LF,

Am 10.12.2012 17:21, schrieb jrusgrove@comcast.net:
[...] Care to share the details of the setup?

Jay W1VD  WD2XNS  WE2XGR/2

Martin has a 80m long wire in maybe 8m above ground. This wire is resonated to LF and transformed to the RX input impedance by using a ferrite rod. A separate LF earth is used. The RX is that one by JA8SCD, http://icas.to/lineup/idc-136-kit-eng.htm  (also used by TF3HZ and DU1GM and others). He also has a tuned loop antenna with about 8 square meters cross section area. I guess its mostly beaming to NE/SW. Furthermore he built a E-H-combiner to optimise the SNR even more. There was a 3 dB improvement in some of the tests.
I don't know exactly what he is using these days but i guess the system is not particularly optimised for best US reception. Maybe there could be a few dB more S/N...

What about WE2XEB? Is that not a motivating goal for him to leave traces in SA, using traditional QRSS or DFCW? He would surely make that distance, not to talk about EU receivers...

73, Stefan/DK7FC




--
73 Warren K2ORS
                WD2XGJ
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1

 
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