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[195.171.43.25]) by mx.google.com with ESMTP id jb14si12069782wic.3.2014.02.18.05.50.10 for ; Tue, 18 Feb 2014 05:50:10 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org; dkim=pass header.i=@gmail.com; dmarc=pass (p=NONE dis=NONE) header.from=gmail.com Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WFk90-0002ul-VB for rs_out_1@blacksheep.org; Tue, 18 Feb 2014 12:51:26 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WFk90-0002uc-Ei for rsgb_lf_group@blacksheep.org; Tue, 18 Feb 2014 12:51:26 +0000 Received: from mail-qc0-f172.google.com ([209.85.216.172]) by relay1.thorcom.net with esmtps (TLSv1:RC4-SHA:128) (Exim 4.77) (envelope-from ) id 1WFk8y-0004OI-3b for rsgb_lf_group@blacksheep.org; Tue, 18 Feb 2014 12:51:25 +0000 Received: by mail-qc0-f172.google.com with SMTP id c9so25750925qcz.3 for ; Tue, 18 Feb 2014 04:51:22 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=qRth32R3CFgY38mEjoCFncfdCBMiORfCXd2c7JFHxLU=; b=SUCVVgNgrsPrXIEAlcNvjjsO3aLmkjngouB8UYMu/ijmFH/LlvCWYLX12+SvugIwNX XZqC7leLfac5VlZoisEL+u0bPNEBLuvI2dnT0U+MVhm5nHJ5dSo2pMqlyT1hZuX5Cd+b w4WqUzMrtpYUEZJQyvlnzFlsLPzURlFfT9baAFW1izcZsZmlVmOktioOFfEzP17iabB1 AgVEMQHZJLvQRnTcaKqRpG03DUrrDD4PgufgLmKBMOKE07Twd3M67W0CYVknBwRkq+D9 7eLNelmN7riEj8QPnw42IWubGJM7xqBI6qr6Ci9L0huByaiw7d0Ib0xPbM3ADbXEo80s zQ4Q== MIME-Version: 1.0 X-Received: by 10.140.41.74 with SMTP id y68mr1434483qgy.105.1392727881913; Tue, 18 Feb 2014 04:51:21 -0800 (PST) Received: by 10.229.241.197 with HTTP; Tue, 18 Feb 2014 04:51:21 -0800 (PST) In-Reply-To: References: Date: Tue, 18 Feb 2014 12:51:21 +0000 Message-ID: From: Roger Lapthorn To: "rsgb_lf_group@blacksheep.org" 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: Thanks Dave, Your reports have been very useful to me. Going to try an auto-transformer to see if I can match the earth-electrode "loop" any better later. Added a series inductor yesterday (about 200uH?) which increased antenna current about 20% [...] 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 [209.85.216.172 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (rogerlapthorn[at]gmail.com) -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: 24b65a258fa7a3a87cfdaa03bb2f3176 Subject: Re: LF: WSPR Reports - G3XBM, G3ZJO, G4KPX... Content-Type: multipart/alternative; boundary=001a11c1223aab9b6404f2adba4e X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE, MAILTO_TO_SPAM_ADDR,TO_ADDRESS_EQ_REAL 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 --001a11c1223aab9b6404f2adba4e Content-Type: text/plain; charset=ISO-8859-1 Thanks Dave, Your reports have been very useful to me. Going to try an auto-transformer to see if I can match the earth-electrode "loop" any better later. Added a series inductor yesterday (about 200uH?) which increased antenna current about 20% 73s Roger G3XBM On 18 February 2014 12:23, Dave G3WCB. wrote: > > > Chaps, > > I'm aware that you've been using my WSPR reports to gauge the effectiveness > of your various QRP WSPR transmissions. I'm using a 80cm square tuned loop > at ground level with a fet pre-amp, feeding my trusty ICOM IC-PCR1000. I've > tried to keep the RX set up unchanged, but the loop is inclined to > "weathercock" around a bit, especially with the storms recently. > > Also, my WSPR RX doesn't run 24x7, as I use the PC for other duties. > > I went out this morning, and found that the loop is aligned along an axis > running 60 - 240 deg, which means that stations in the IO92 direction are > pretty much in the null direction. As an experiment, from 1214 UTC today I > have aligned the loop antenna in a 165 - 345 deg direction. To remove any > interaction with the main station "Tee" antenna, which is in the same > general area, I have disconnected this and moved my WSPR TX on to the short > vertical antenna, which is 30m away from the loop. > > I'll swap the loop back to it's 60 - 240 deg orientation later on - I'll > announce when I've done this. > > 73, Dave G3WCB IO91RM > > > -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk https://sites.google.com/site/sub9khz/ http://qss2.blogspot.com/ http://www.youtube.com/user/g3xbm --001a11c1223aab9b6404f2adba4e Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Thanks Dave,

Your reports have been very usef= ul to me. Going to try an auto-transformer to see if I can match the earth-= electrode "loop" any better later. Added a series inductor yester= day (about 200uH?) which increased antenna current about 20%

73s
Roger G3XBM


On 18 February 2014 12:23, Dave G3WCB. <ganymede444@btopenworld.com> wrote:


Chaps,

I'm aware that you've been using my WSPR reports to gauge the effec= tiveness
of your various QRP WSPR transmissions. I'm using a 80cm square tuned l= oop
at ground level with a fet pre-amp, feeding my trusty ICOM IC-PCR1000. I= 9;ve
tried to keep the RX set up unchanged, but the loop is inclined to
"weathercock" around a bit, especially with the storms recently.<= br>
Also, my WSPR RX doesn't run 24x7, as I use the PC for other duties.
I went out this morning, and found that the loop is aligned along an axis running 60 - 240 deg, which means that stations in the IO92 direction are pretty much in the null direction. As an experiment, from 1214 UTC today I<= br> have aligned the loop antenna in a 165 - 345 deg direction. To remove any interaction with the main station "Tee" antenna, which is in the = same
general area, I have disconnected this and moved my WSPR TX on to the short=
vertical antenna, which is 30m away from the loop.

I'll swap the loop back to it's 60 - 240 deg orientation later on -= I'll
announce when I've done this.

73, Dave G3WCB IO91RM





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