Return-Path: X-Spam-DCC: paranoid 1181; Body=3 Fuz1=3 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_MESSAGE,RATWARE_GECKO_BUILD autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id tAJIWTp9007573 for ; Thu, 19 Nov 2015 19:32:29 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZzTxr-00045f-Ey for rs_out_1@blacksheep.org; Thu, 19 Nov 2015 18:29:47 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZzTxr-00045W-2I for rsgb_lf_group@blacksheep.org; Thu, 19 Nov 2015 18:29:47 +0000 Received: from mail-wm0-f45.google.com ([74.125.82.45]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.86) (envelope-from ) id 1ZzTwn-0000R1-0g for rsgb_lf_group@blacksheep.org; Thu, 19 Nov 2015 18:29:45 +0000 Received: by wmec201 with SMTP id c201so39308482wme.0 for ; Thu, 19 Nov 2015 10:28:20 -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=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type; bh=fxmCRv0whH00LQUSj+u+Ye9VI/xYq5yuiNEkHDSXe0Q=; b=YtJe7W8v3upS17VW03SbxoCKuAi4HNBsKVKuvVLW0IDm01x/NQLFugsOD0GTnN0/u6 59zwuwQO656NQv22BkMM44aqY1TFg8pdNVNP8QCA2eVN6EuhiATzbqDLShmlxRjo3+0/ jLAJXsOYRQf+TGoZBqOQ++wezxSIEmwWakoMifMiywCr74+jN8zJHjzh2mzqBKOzOhvF crvs8jc6/G22FlPvDW6DpyCA0LlfFrxZzQGDhMD9LNuIxjHvHZm/2nEjr2csBo+xUOeq NchELwk0He42bicjg7DWS3rUV/5APHgzNGNPbdFayruzUmprH6Zd2N088WIVpgaUOz49 uE2A== X-Received: by 10.28.129.131 with SMTP id c125mr16967727wmd.21.1447957700627; Thu, 19 Nov 2015 10:28:20 -0800 (PST) Received: from [192.168.0.7] (net-37-182-103-27.cust.vodafonedsl.it. [37.182.103.27]) by smtp.googlemail.com with ESMTPSA id w203sm19202645wmg.15.2015.11.19.10.28.19 for (version=TLSv1/SSLv3 cipher=OTHER); Thu, 19 Nov 2015 10:28:19 -0800 (PST) Message-ID: <564E14C3.6050507@gmail.com> Date: Thu, 19 Nov 2015 19:28:19 +0100 From: IZ7SLZ User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130620 Thunderbird/17.0.7 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <8D2F10B9D429931-9B4-D3FF3@webmail-vm186.sysops.aol.com> In-Reply-To: <8D2F10B9D429931-9B4-D3FF3@webmail-vm186.sysops.aol.com> X-Scan-Signature: 85ec4a6bf4b19214eecc06056d1d344b Subject: Re: LF: EbNaut LF test from iz7slz Content-Type: multipart/alternative; boundary="------------020509060500090207080200" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 5193 This is a multi-part message in MIME format. --------------020509060500090207080200 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit /---// //In the past, Domenico sometimes suffered from a GPS ambuiguity which gave him a one second clock error. // //---/ Yes, my clock is derived from Jupiter GPS and its 1_pps signal. Sometimes nmea is late of 1 second and i have to rectify that. Sorry for the inconvenience. Maybe i can send only unmodulated carrier for the next 30' just to allow Paul to make a phase measurent ? Cheers Domenico On 11/19/2015 7:02 PM, Markus Vester wrote: > As far as I can see the transmission is on the nominal frequency. I > needed the offset because I had set my center frequency to 136171 Hz, > minus 0.0175 Hz due to known RX DDS rounding. > The sequences seem to be somewhere between 0.9 and 1.4 seconds behind > UT. I can't tell better because I'm currently decimating to a fairly > low samplerate, introducing significant timing granularity. In the > past, Domenico sometimes suffered from a GPS ambuiguity which gave him > a one second clock error. > Best 73, > Markus > > -----Ursprüngliche Mitteilung----- > Von: Andy Talbot > An: rsgb_lf_group > Verschickt: Do, 19 Nov 2015 6:49 pm > Betreff: Re: LF: EbNaut LF test from iz7slz > > Also, looking at the log.txt file, there is 0.98Hz error showing. Is > this a value that MUST be entered, or can the software derive it? > > Andy > > > On 19 November 2015 at 17:30, Markus Vester > wrote: > > Hi Domenico, > got your 15, 16 and 17 UT transmissions ok, with Eb/N0 3.1, 11.8 > and 9.0 dB respectively. > It looks like the symbol timing is a bit over one second late. > Best 73, > Markus (DF6NM) > > -----Ursprüngliche Mitteilung----- > Von: IZ7SLZ > > An: rsgb_lf_group > > Verschickt: Do, 19 Nov 2015 1:04 pm > Betreff: LF: EbNaut LF test from iz7slz > > > > > Good day LF, all > > > > some coherent bpsk test transmissions with EbNaut are now scheduled > > from here (JN80NU) on QRG = 136170.00 Hz every hour starting at 13:00. > > > > Message is composed of 16 characters with 1s/symbol. Duration of the > > transmission is 17'20''. Scheme-code is 8K19A. > > > > Thanks for the attention. > > > > 73, Domenico (iz7slz) > > > > > > > > > > --------------020509060500090207080200 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit
---
In the past, Domenico sometimes suffered from a GPS ambuiguity which gave him a one second clock error. 
---

Yes, my clock is derived from Jupiter GPS and its 1_pps signal. Sometimes nmea is late of 1 second and i have to rectify that.

Sorry for the inconvenience.

Maybe i can send only unmodulated carrier for the next 30' just to allow Paul to make a phase measurent ?

Cheers

Domenico
 


On 11/19/2015 7:02 PM, Markus Vester wrote:
As far as I can see the transmission is on the nominal frequency. I needed the offset because I had set my center frequency to 136171 Hz, minus 0.0175 Hz due to known RX DDS rounding.
 
The sequences seem to be somewhere between 0.9 and 1.4 seconds behind UT. I can't tell better because I'm currently decimating to a fairly low samplerate, introducing significant timing granularity. In the past, Domenico sometimes suffered from a GPS ambuiguity which gave him a one second clock error.  
 
Best 73,
Markus
 

-----Ursprüngliche Mitteilung-----
Von: Andy Talbot <andy.g4jnt@gmail.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 19 Nov 2015 6:49 pm
Betreff: Re: LF: EbNaut LF test from iz7slz

Also, looking at the log.txt file, there is 0.98Hz error showing.   Is this a value that MUST be entered, or can the software derive it?

Andy


On 19 November 2015 at 17:30, Markus Vester <markusvester@aol.com> wrote:
Hi Domenico,
 
got your 15, 16 and 17 UT transmissions ok, with Eb/N0 3.1, 11.8 and 9.0 dB respectively.
 
It looks like the symbol timing is a bit over one second late.
 
Best 73,
Markus (DF6NM)
 

-----Ursprüngliche Mitteilung-----
Von: IZ7SLZ <iz7slz.domenico@gmail.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 19 Nov 2015 1:04 pm
Betreff: LF: EbNaut LF test from iz7slz




Good day LF, all 

  

 some coherent bpsk test  transmissions with EbNaut are now scheduled  

 from here (JN80NU) on QRG = 136170.00 Hz  every hour starting at 13:00. 

  

 Message is composed of 16 characters with 1s/symbol. Duration of the  

 transmission is 17'20''. Scheme-code is 8K19A. 

  

 Thanks for the attention. 

  

 73, Domenico (iz7slz)




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