Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mi02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 3BA9E38000121; Sun, 3 Feb 2013 15:39:56 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1U26Kn-00033t-5w for rs_out_1@blacksheep.org; Sun, 03 Feb 2013 20:38:41 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1U26Km-00033k-C6 for rsgb_lf_group@blacksheep.org; Sun, 03 Feb 2013 20:38:40 +0000 Received: from mail-qe0-f44.google.com ([209.85.128.44]) by relay1.thorcom.net with esmtps (TLSv1:RC4-SHA:128) (Exim 4.77) (envelope-from ) id 1U26Kj-0001Eh-3Z for rsgb_lf_group@blacksheep.org; Sun, 03 Feb 2013 20:38:39 +0000 Received: by mail-qe0-f44.google.com with SMTP id a11so2563940qen.17 for ; Sun, 03 Feb 2013 12:38:14 -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:x-received:in-reply-to:references:date:message-id :subject:from:to:content-type; bh=qp48tk0ii4IeMnchIj0KmCec6pXCNLX02AzCrL17new=; b=rC4OVVAeWY6B7vYE7rIcGyZgYUuBYEorcOQkjItuibga4sW+ntGbosAh7nT8MqZIoz 3xz1i7QeI6VCIkGu27D65+TE0KtOpckzkJHHndH9FPjqOLHObjltgu/vndPj1REZz5BS zQpIgcygcKfQH8/nVcC6C5+cD0B2UNiHvk6hwGINx6AycUU3YedRpBZ42WXlcRWZEY+u Z7uvp+lN6fAdYpCgxFRCJ1bl7yu7NTYcHAwl4bFCtEx63KlC4WYyggW3w2O/CN6jkEuu nIBu2xkhnMYnbUWAGVSzRlyv8u3r4jOKzwE/3JHQKR6rMWqYCdmTRb6X4AAaeMqmVkEK xZSw== MIME-Version: 1.0 X-Received: by 10.229.112.37 with SMTP id u37mr3964423qcp.79.1359923894887; Sun, 03 Feb 2013 12:38:14 -0800 (PST) Received: by 10.229.201.228 with HTTP; Sun, 3 Feb 2013 12:38:14 -0800 (PST) In-Reply-To: References: Date: Sun, 3 Feb 2013 20:38:14 +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 for the tip Lawrence. I will try a lower supply voltage first. 73s Roger G3XBM On 3 February 2013 19:45, Laurence KL1 X 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 [209.85.128.44 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: d63ea50e288c5ecb9bd7a86eeabe94f2 Subject: Re: LF: 817 drift Content-Type: multipart/alternative; boundary=002354470f38ad265004d4d7f436 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40, HTML_FONTCOLOR_UNSAFE,HTML_MESSAGE,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 x-aol-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mtain-mi02.r1000.mx.aol.com ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d7b8a510ecb1c4e49 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --002354470f38ad265004d4d7f436 Content-Type: text/plain; charset=ISO-8859-1 Thanks for the tip Lawrence. I will try a lower supply voltage first. 73s Roger G3XBM On 3 February 2013 19:45, Laurence KL1 X wrote: > Roger - I had the same drift issue and added the txco with little > improvement - best was when unit was powered driven by lower voltage - > think mine is set around 9.6V at the moment and less heat..it also sits in > the cool garage...think Dex also found the same > > Laurence KL 1 X > > ------------------------------ > Date: Sun, 3 Feb 2013 19:23:35 +0000 > From: rogerlapthorn@gmail.com > To: rsgb_lf_group@blacksheep.org; rsgb_lf_group@yahoogroups.co.uk > Subject: LF: WSPR15 - sort of success > > After several attempts Tom G8HUH managed to decode my WSPR15 transmission > on 137.607kHz this evening. As the FT817 was drifting around 4Hz in the 15 > minute TX slot with the FT817 on 1837.607kHz (I was using a stabilised sig > gen for the LO at 1.7MHz), I think this was messing up the decodes as Tom > only gave me -32 and -34dB S/N whereas I have been getting some 6dB BETTER > than this with the WSPR2 transmissions. > > If WSPR15 is going to succeed for me I need a more stable rig (or a 0.5ppm > TXCO fitted to the FT817) or a fan to force cool the FT817 - even when > running 500mW! > > I'll leave the rig on for a little while longer, but will probably revert > to WSPR2 for the rest of the evening. > > Thank you Tom G8HUH, and Trevor G0KTN, for working with me for the last > couple of hours to get this as good as I could. > > 73s > Roger G3XBM > > -- > 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 > > -- 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 --002354470f38ad265004d4d7f436 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Thanks for the tip Lawrence. I will try a lower = supply voltage first.

73s
Roger G3XBM


On 3 February 2013 = 19:45, Laurence KL1 X <hellozerohellozero@hotmail.com>= wrote:
Roger - I had the same drift issue and added the txco with little improveme= nt - best was when unit was powered driven by lower voltage - think mine is= set around 9.6V at the moment and less heat..it also sits in the cool gara= ge...think Dex also found the same

Laurence KL 1 X

Date: Sun, 3 Feb 2013 19:23:= 35 +0000
From: rogerlapthorn@gmail.com
To: rsgb_lf_group@blacksheep.org; rsgb_lf_group@yah= oogroups.co.uk
Subject: LF: WSPR15 - sort of success

After several attempts Tom G8HUH managed to decode my WSPR15 transmi= ssion on 137.607kHz this evening. As the FT817 was drifting around 4Hz in t= he 15 minute TX slot with the FT817 on 1837.607kHz (I was using a stabilise= d sig gen for the LO at 1.7MHz), I think this was messing up the decodes as= Tom only gave me -32 and -34dB S/N whereas I have been getting some 6dB BE= TTER than this with the WSPR2 transmissions.

If WSPR15 is going to succeed for me I need a more stable rig (or= a 0.5ppm TXCO fitted to the FT817) or a fan to force cool the FT817 - even= when running 500mW!

I'll leave the rig on for a little wh= ile longer, but will probably revert to WSPR2 for the rest of the evening.<= br>
Thank you Tom G8HUH, and Trevor G0KTN, for working with me f= or the last couple of hours to get this as good as I could.
<= br>
73s
Roger G3XBM
<= /div>



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