Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 72CE3380000AC; Sat, 30 Mar 2013 08:58:49 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ULvLh-0003ZD-VJ for rs_out_1@blacksheep.org; Sat, 30 Mar 2013 12:57:33 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ULvLh-0003Z4-3u for rsgb_lf_group@blacksheep.org; Sat, 30 Mar 2013 12:57:33 +0000 Received: from imr-db02.mx.aol.com ([205.188.91.96]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1ULvLe-0007Xz-5E for rsgb_lf_group@blacksheep.org; Sat, 30 Mar 2013 12:57:31 +0000 Received: from mtaout-mb02.r1000.mx.aol.com (mtaout-mb02.r1000.mx.aol.com [172.29.41.66]) by imr-db02.mx.aol.com (Outbound Mail Relay) with ESMTP id 587481C000071 for ; Sat, 30 Mar 2013 08:57:07 -0400 (EDT) Received: from Black (188-195-246-26-dynip.superkabel.de [188.195.246.26]) by mtaout-mb02.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 64C8AE00008D for ; Sat, 30 Mar 2013 08:57:06 -0400 (EDT) Message-ID: From: "Markus Vester" To: References: <000501ce2d39$07bdd430$6401a8c0@JAYDELL> In-Reply-To: <000501ce2d39$07bdd430$6401a8c0@JAYDELL> Date: Sat, 30 Mar 2013 13:56:39 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20121107; t=1364648227; bh=k6EbXM+0tYbsTQBAgtF0DRYCE/SyJQT7imb0Zs0dEZk=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=tu74zgAsmH5SD3/tmAbbCKjTZmcVyomStjUPKGqpTGNR8LU06yJphF8FvzpTY4U2l RBSGXAd73eatyRAr/CxZu8dIBYloKQ7zU1lV1DJ6/MoT9AJvEzZXl/bf3KENfHd4vh vhyPwz0jXwt/UTsWlnBVf38cBObYZC2A5eE0onik= X-AOL-SCOLL-SCORE: 0:2:309520160:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-Spam-Score: -1.3 (-) 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: Jay, thanks very much for this! The night before one wire had fallen off the topload again, and so I decided to refurbish the antenna yesterday. The PE insulation of the wire ("NVA-Litze", originally for battlefield telephones) had become worn and brittle over the years, and the parts where it had come off near the ends were prone to partial discharges. I replaced the whole topload (42 m total) with fresh wire, using the original double wire instead of single ones. At the top half of each leg, the two wires were split and spaced by 25 cm to increase capacitance a bit. Driving it with about 400W, I was then able to reach 1.0 W ERP for the first time, with no visible corona at 4.6A / 20kV. During the night, WSPR-15 was then sent with 4.3A (0.9W ERP) and 25% duty. At the end of a 15 minute transmission, the temperature at the inside of the litzwire loading coil had gone up to 80°C, so I seem to be limited by current rather than voltage now. Anyway it looks like the 2 dB ERP increase has indeed helped ;-) [...] Content analysis details: (-1.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [205.188.91.96 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 SPF_PASS SPF: sender matches SPF record -1.3 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 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: 7c995d39cde70605aa76dd18810a4256 Subject: LF: Re: DF6NM DK7FC in CT Content-Type: multipart/alternative; boundary="----=_NextPart_000_001B_01CE2D4E.66C13480" 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_20_30,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-AUTHENTICATION: mtain-da05.r1000.mx.aol.com ; domain : mx.aol.com DKIM : fail x-aol-sid: 3039ac1d404d5156e1880823 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_001B_01CE2D4E.66C13480 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Jay, thanks very much for this!=20 The night before one wire had fallen off the topload again, and so I = decided to refurbish the antenna yesterday. The PE insulation of the = wire ("NVA-Litze", originally for battlefield telephones) had become = worn and brittle over the years, and the parts where it had come off = near the ends were prone to partial discharges. I replaced the whole = topload (42 m total) with fresh wire, using the original double wire = instead of single ones. At the top half of each leg, the two wires were = split and spaced by 25 cm to increase capacitance a bit. Driving it with = about 400W, I was then able to reach 1.0 W ERP for the first time, with = no visible corona at 4.6A / 20kV. During the night, WSPR-15 was then = sent with 4.3A (0.9W ERP) and 25% duty. At the end of a 15 minute = transmission, the temperature at the inside of the litzwire loading coil = had gone up to 80=B0C, so I seem to be limited by current rather than = voltage now. Anyway it looks like the 2 dB ERP increase has indeed = helped ;-) Unfortunately the mast, which cannot be guyed from the east from our = plot, now heavily bends under the increased weight and wind load. Today = I have attempted to install a temporary auxiliary pole which apparently = helps to stabilize the mast: http://www.df6nm.bplaced.net/LF/pictures/topload_doubled/ This adventurous construction seems to do the job but will not last - it = surely won't pass neighbours' visual acceptance criteria, and I will = anyway have to close the roof window as soon as it starts to rain ;-)=20 BTW Jay, on WSPRnet there were spots from both WD2XNS and W1VD - are you = using two different receivers in parallel? Best 73, Markus (DF6NM) ----- Original Message -----=20 From: jrusgrove@comcast.net=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Saturday, March 30, 2013 12:23 PM Subject: LF: DF6NM DK7FC in CT Markus Glad to see Markus make it across the pond last night ... despite less = than favorable DST.=20 2013-03-30 05:30 DK7FC 0.137610 -30 0 JN49ik 1 W1VD FN31ls 6099 2013-03-30 05:00 DK7FC 0.137610 -33 0 JN49ik 1 W1VD FN31ls 6099 2013-03-30 04:30 DK7FC 0.137610 -32 0 JN49ik 1 W1VD FN31ls 6099 2013-03-30 04:00 DK7FC 0.137610 -30 0 JN49ik 1 W1VD FN31ls 6099 2013-03-30 03:30 DK7FC 0.137610 -31 0 JN49ik 1 W1VD FN31ls 6099 2013-03-30 03:00 DK7FC 0.137610 -26 0 JN49ik 1 W1VD FN31ls 6099 2013-03-30 02:30 DK7FC 0.137610 -34 0 JN49ik 1 W1VD FN31ls 6099 2013-03-30 02:00 DK7FC 0.137610 -26 0 JN49ik 1 W1VD FN31ls 6099 2013-03-30 02:00 DF6NM 0.137616 -38 0 JN59nj 0.5 W1VD FN31ls = 6258 2013-03-30 01:30 DK7FC 0.137610 -28 0 JN49ik 1 W1VD FN31ls 6099 = Jay W1VD WD2XNS WE2XGR/2 ------=_NextPart_000_001B_01CE2D4E.66C13480 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Jay, thanks very=20 much for this!
 
The night before one wire had = fallen off=20 the topload again, and so I decided to refurbish the antenna yesterday.=20 The PE insulation of the wire = ("NVA-Litze", originally for=20 battlefield telephones) had become worn and brittle over the years,=20 and the parts where it had come off near the ends were = prone to=20 partial discharges. I replaced the whole topload (42 m total) with = fresh=20 wire, using the original double wire instead of single ones. At the = top=20 half of each leg, the two wires were split and spaced by 25 cm to = increase=20 capacitance a bit. Driving it with about 400W, I was then able = to=20 reach 1.0 W ERP for the first time, with no visible corona at 4.6A = /=20 20kV. During the night, WSPR-15 was then sent with 4.3A (0.9W ERP) = and 25%=20 duty. At the end of a 15 minute transmission, the temperature = at the=20 inside of the litzwire loading coil had gone up to 80=B0C, so I seem to = be limited=20 by current rather than voltage now. Anyway it looks like the 2 dB ERP = increase=20 has indeed helped ;-)
 
Unfortunately the mast, which cannot be = guyed from=20 the east from our plot, now heavily bends under the increased weight and = wind=20 load. Today I have attempted to install a temporary auxiliary pole = which=20 apparently helps to stabilize the mast:
http:/= /www.df6nm.bplaced.net/LF/pictures/topload_doubled/
This adventurous construction seems = to do the=20 job but will not last - it surely won't pass neighbours' visual = acceptance=20 criteria, and I will anyway have to close the roof window as soon as it = starts=20 to rain ;-)
 
BTW Jay, on WSPRnet there were = spots from=20 both WD2XNS and W1VD - are you using two different receivers = in=20 parallel?
 
Best 73,
Markus (DF6NM)
 
 
----- Original Message -----=20
From: jrusgrove@comcast.net
Sent: Saturday, March 30, 2013 12:23 PM
Subject: LF: DF6NM DK7FC in CT

Markus

Glad to = see Markus=20 make it across the pond last night ... despite less than favorable DST.=20

2013-03-30 05:30  DK7FC  0.137610  -30  = 0 =20 JN49ik  1  W1VD  FN31ls  6099
2013-03-30 = 05:00 =20 DK7FC  0.137610  -33  0  JN49ik  1  = W1VD =20 FN31ls  6099
2013-03-30 04:30  DK7FC  0.137610  = -32 =20 0  JN49ik  1  W1VD  FN31ls  6099
2013-03-30=20 04:00  DK7FC  0.137610  -30  0  JN49ik  = 1 =20 W1VD  FN31ls  6099
2013-03-30 03:30  DK7FC =20 0.137610  -31  0  JN49ik  1  W1VD  = FN31ls =20 6099
2013-03-30 03:00  DK7FC  0.137610  -26  = 0 =20 JN49ik  1  W1VD  FN31ls  6099
2013-03-30 = 02:30 =20 DK7FC  0.137610  -34  0  JN49ik  1  = W1VD =20 FN31ls  6099
2013-03-30 02:00  DK7FC  0.137610  = -26 =20 0  JN49ik  1  W1VD  FN31ls  6099
2013-03-30=20 02:00  DF6NM  0.137616  -38  0  JN59nj  = 0.5 =20 W1VD  FN31ls  6258
2013-03-30 01:30  DK7FC =20 0.137610  -28  0  JN49ik  1  W1VD  = FN31ls =20 6099

Jay W1VD  WD2XNS  WE2XGR/2

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