Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dh05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 56C84380000B5; Sun, 12 Aug 2012 18:52:18 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1T0gzY-0000Zc-L7 for rs_out_1@blacksheep.org; Sun, 12 Aug 2012 23:50:40 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1T0gzX-0000ZR-OL for rsgb_lf_group@blacksheep.org; Sun, 12 Aug 2012 23:50:39 +0100 Received: from imr-da06.mx.aol.com ([205.188.169.203]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1T0gzV-00052x-Kj for rsgb_lf_group@blacksheep.org; Sun, 12 Aug 2012 23:50:38 +0100 Received: from mtaout-db06.r1000.mx.aol.com (mtaout-db06.r1000.mx.aol.com [172.29.51.198]) by imr-da06.mx.aol.com (8.14.1/8.14.1) with ESMTP id q7CMoYOn017669 for ; Sun, 12 Aug 2012 18:50:34 -0400 Received: from White (nrbg-4d057392.pool.mediaWays.net [77.5.115.146]) by mtaout-db06.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 0BA97E0000BD for ; Sun, 12 Aug 2012 18:50:30 -0400 (EDT) Message-ID: <69AC9563F17C4F91B8B907A822C6DAEC@White> From: "Markus Vester" To: References: <32bf3d97.26cc79.1391abf9386.Webtop.48@charter.net> <8DBE0BFA-B8ED-407C-9EA6-20F4175A87C5@charter.net> Date: Mon, 13 Aug 2012 00:50:23 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20110426; t=1344811834; bh=GTKxSYkePyc7ompHOHnwYsthCarpsfOhvssY1Aguv4E=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=NSEUe0oApbYjz6VkPiINk9SsL8IxzyHOVfN9vpWGcP980yPex5G9TQpuWkOPa4Y6/ HmSiKjXEl/m7Yjy3YFh2u6SRugKENfmIsxnqgJSkhHnwR10q974i1SrLGSdrZ6TChS +Kg4edK8nmbGmM+WN/b1IoqEZc93G605weqc1i1I= X-AOL-SCOLL-SCORE: 0:2:390691872:93952408 X-AOL-SCOLL-URL_COUNT: 0 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: John, regarding your receive wire: "In the woods" seems to suggest that it may be receiving mostly the magnetic field component, acting as an earth loop. What is the orientation of the wire (eg SW to NE?), and do you experience some directivity? [...] 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 [205.188.169.203 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 40d35b6fcf8b66e4fec28fa30f99f125 Subject: Re: LF: Op32 tonight on 137kHz - wire on ground Content-Type: multipart/alternative; boundary="----=_NextPart_000_0010_01CD78ED.9F1506B0" 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_50_60,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-SCOLL-SCORE: 0:2:437962976:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d018.1 ; domain : mx.aol.com DKIM : pass x-aol-sid: 3039ac1d4119502833a22c61 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_0010_01CD78ED.9F1506B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable John, regarding your receive wire: "In the woods" seems to suggest that it may = be receiving mostly the magnetic field component, acting as an earth = loop. What is the orientation of the wire (eg SW to NE?), and do you = experience some directivity? Best 73, Markus (DF6NM) From: John Andrews=20 Sent: Sunday, August 12, 2012 3:18 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Op32 tonight on 137kHz Stephan, -35 @ 0213 -36 @ 0245 Yes, just an unterminated wire. There is a ground stake at the near end, = and I use a hi-z input preamp to drive a Cat5 cable back to the shack. = This is all well out in the woods to avoid a rather noisy power line = near the house.=20 It works very well at MF and LF. An elevated wire picks up more signal, = but does not improve the SNR. It also causes intermodulation products = with NAA on 24 kHz.=20 John, W1TAG On Aug 12, 2012, at 8:31 AM, "Graham" wrote: John, Do you have the s/n levels ? 150 mtr wire on the ground ..... actually on the ground , far = end open cct ?=20 Tnx -G.=20 From: w1tag@charter.net=20 Sent: Sunday, August 12, 2012 1:12 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Op32 tonight on 137kHz Stephan, It was quite noisy here last night, with storms along the eastern U.S. = In addition to the W1TAG and W1VD decodes at 0213Z, we both had decodes = on the next cycle at 0245, and Jay had one at 0318Z. His K9AY antenna = has some advantage by rejecting noise from the west. My rx antenna here = in Maine is just a 150 meter wire on the ground. John W1TAG/1 FN43sv ------=_NextPart_000_0010_01CD78ED.9F1506B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
John,
 
regarding your receive wire: "In the = woods" seems=20 to suggest that it may be receiving mostly the magnetic field component, = acting=20 as an earth loop. What is the orientation of the wire (eg SW to = NE?), and=20 do you experience some directivity?
 
Best 73,
Markus (DF6NM)

Sent: Sunday, August 12, 2012 3:18 PM
Subject: Re: LF: Op32 tonight on 137kHz

Stephan,

-35 @ 0213
-36 @ 0245

Yes, just an unterminated wire. There is a ground stake at the near = end,=20 and I use a hi-z input preamp to drive a Cat5 cable back to the shack. = This is=20 all well out in the woods to avoid a rather noisy power line near the=20 house. 

It works very well at MF and LF. An elevated wire picks up more = signal, but=20 does not improve the SNR. It also causes intermodulation products with = NAA on 24=20 kHz. 

John, W1TAG


On Aug 12, 2012, at 8:31 AM, "Graham" <g8fzk@g8fzk.fsnet.co.uk>=20 wrote:

John,
 
Do you have the  s/n  levels  ?
 
150 mtr  wire on the  ground .....  actually  = on=20 the  ground , far  end  open cct ?
 
Tnx -G.

Sent: Sunday, August 12, 2012 1:12 PM
Subject: Re: LF: Op32 tonight on 137kHz
 
Stephan,
It was quite noisy here last night, with storms along = the eastern=20 U.S. In addition to the W1TAG and W1VD decodes at 0213Z, we both had = decodes=20 on the next cycle at 0245, and Jay had one at 0318Z. His K9AY antenna = has some=20 advantage by rejecting noise from the west. My rx antenna here in = Maine is=20 just a 150 meter wire on the ground.
John W1TAG/1 FN43sv
 
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