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[86.30.34.207]) by mx.google.com with ESMTPSA id iz19sm3410441wic.9.1969.12.31.16.00.00 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 13 Sep 2013 06:01:33 -0700 (PDT) References: From: Roger Lapthorn X-Mailer: iPod Mail (10A523) In-Reply-To: Message-Id: <55A41E8F-C90D-46EE-B75B-AA296FDDEFEC@gmail.com> Date: Fri, 13 Sep 2013 14:01:32 +0100 To: "rsgb_lf_group@blacksheep.org" Mime-Version: 1.0 (1.0) 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: No changes Dave. Thanks for the reports. 73s Roger G3XBM On 13 Sep 2013, at 11:30, "Dave G3WCB." wrote: [...] 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 [209.85.212.176 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: 567a11ac6cfe1e88f3054745c06178fe Subject: Re: LF: RE: 630m WSPR this evening Content-Type: multipart/alternative; boundary=Apple-Mail-7F49B780-07C9-40DE-B99F-F4A5024D8FB3 Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.1 required=5.0 tests=HTML_30_40,HTML_FONTCOLOR_BLUE, HTML_FONTCOLOR_UNSAFE,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 Status: O X-Status: X-Keywords: X-UID: 2632 --Apple-Mail-7F49B780-07C9-40DE-B99F-F4A5024D8FB3 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable No changes Dave. Thanks for the reports.=20 73s Roger G3XBM On 13 Sep 2013, at 11:30, "Dave G3WCB." wrote:= > Hi, Roger. > =20 > I'm copying you this morning - see screenshot. (I've got a bit of interfer= ence just HF of your WSPR transmission). > =20 > Have you changed anything your end? > =20 > 73, Dave G3WCB IO91RM > =20 > =20 > -----Original Message----- > From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@black= sheep.org]On Behalf Of Roger Lapthorn > Sent: 12 September 2013 20:22 > To: rsgb_lf_group@blacksheep.org > Subject: Re: LF: RE: 630m WSPR this evening >=20 > And you are weaker with me Dave G3WCB (-30dB) than on the earth-electrode s= et-up. Suspect loop directionality and odd orientation may be the issue? >=20 > 73s > Roger G3XBM >=20 >=20 > On 12 September 2013 20:06, Dave G3WCB. wrot= e: >> Hi, Roger. >> =20 >> No sign of you so far this evening. >> =20 >> 73, Dave G3WCB IO9RM >> -----Original Message----- >> From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blac= ksheep.org]On Behalf Of Roger Lapthorn >> Sent: 12 September 2013 19:15 >> To: rsgb_lf_group@blacksheep.org >> Subject: LF: 630m WSPR this evening >>=20 >> 'Recently I moved 350m east (!) to a new QTH and I've been experimenting w= ith 630m WSPR.=20 >>=20 >> My initial tests were with the transverter on my website feeding a pair o= f earth-electrodes but with a shorter baseline than was possible at the old Q= TH (about 12m separation). Although I managed to get reports from G, ON and P= A, it was clear that results were nowhere near as good as I obtained at the o= ld QTH. I am speculating that this is due to the effective spacing between e= arth rods being much shorter and due to buried wires and pipes criss-crossin= g the lawn. On RX it is working very well though and I have copied most of t= he nearer Europeans on 630m WSPR.=20 >>=20 >> This afternoon I converted the earth-electrode antenna to an "in the air"= loop by disconnecting the earth rods and joining the wire ends with a wire r= unning along the top of the lawn (in the grass). The loop DC resistance is 0= .9 ohms and it tunes sharply with about 1.7nF. Matching is via a 3C90 step-d= own toroid. >>=20 >> Initial encouraging reports include first spots from M0PPP, who had faile= d to copy me before from this QTH, as well as PA3ABK/2 and G8HUH. >>=20 >> If anyone else can look for me this evening I'd appreciate it. The loop i= s not very high and can be further improved if results this evening are enco= uraging. >>=20 >> 73s >> Roger G3XBM >>=20 >> --=20 >> 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 >=20 >=20 >=20 > --=20 > 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 >=20 > --Apple-Mail-7F49B780-07C9-40DE-B99F-F4A5024D8FB3 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
No changes Dave. Thanks for the reports. 

73s
Roger G3XBM

On 13 Sep 2013, at 11:30, "Dave G3WCB." <ganymede444@btopenworld.com> wrote:

Hi, Roger.
 
I'm copying you this morning - see screenshot. (I've got a bit of interference just HF of your WSPR transmission).
 
Have you changed anything your end?
 
73, Dave G3WCB IO91RM
 
 
-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of Roger Lapthorn
Sent: 12 September 2013 20:22
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: RE: 630m WSPR this evening

And you are weaker with me Dave G3WCB (-30dB) than on the earth-electrode set-up. Suspect loop directionality and odd orientation may be the issue?

73s
Roger G3XBM


On 12 September 2013 20:06, Dave G3WCB. <ganymede444@btopenworld.com> wrote:
Hi, Roger.
 
No sign of you so far this evening.
 
73, Dave G3WCB IO9RM
-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of Roger Lapthorn
Sent: 12 September 2013 19:15
To: rsgb_lf_group@blacksheep.org
Subject: LF: 630m WSPR this evening

'Recently I moved 350m east (!) to a new QTH and I've been experimenting with 630m WSPR.

My initial tests were with the transverter on my website feeding a pair of earth-electrodes but with a shorter baseline than was possible at the old QTH (about 12m separation). Although I managed to get reports from G, ON and PA, it was clear that results were nowhere near as good as I obtained at the old QTH. I am speculating that this is due to the effective spacing between earth rods being much shorter and due to buried wires and pipes criss-crossing the lawn. On RX it is working very well though and I have copied most of the nearer Europeans on 630m WSPR.

This afternoon I converted the earth-electrode antenna to an "in the air" loop by disconnecting the earth rods and joining the wire ends with a wire running along the top of the lawn (in the grass). The loop DC resistance is 0.9 ohms and it tunes sharply with about 1.7nF. Matching is via a 3C90 step-down toroid.

Initial encouraging reports include first spots from M0PPP, who had failed to copy me before from this QTH, as well as PA3ABK/2 and G8HUH.

If anyone else can look for me this evening I'd appreciate it. The loop is not very high and can be further improved if results this evening are encouraging.

73s
Roger G3XBM

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