Return-Path: X-Spam-DCC: paranoid 1233; 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=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_MESSAGE 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 tA7Isp2n007299 for ; Sat, 7 Nov 2015 19:54:51 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Zv8aS-0008SE-4n for rs_out_1@blacksheep.org; Sat, 07 Nov 2015 18:51:40 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Zv8aR-0008S5-Ni for rsgb_lf_group@blacksheep.org; Sat, 07 Nov 2015 18:51:39 +0000 Received: from mail-wi0-f169.google.com ([209.85.212.169]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.86) (envelope-from ) id 1Zv8ZO-00041k-AE for rsgb_lf_group@blacksheep.org; Sat, 07 Nov 2015 18:51:38 +0000 Received: by wimw2 with SMTP id w2so48148360wim.1 for ; Sat, 07 Nov 2015 10:50:17 -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=41q0Svj/wJqac/WAphVy9VQh9cjGgCackAX0vwZLnlo=; b=LZ0OywBJeD7zaEsIv5S6PjiNwdtMe91R+Lz5eZuwQyv5GDA2f4RDpF9NKT1Gf5vaYn 3c1k41837SiCwjbTCKp0Mgag7jsvo4J+WHBj0qMPk1oDzaQYdi/vNgI4Fu+QysH+RKN/ zwjrd3kG7UGFYyb2bPoWHfTOtDFl7Y3RveePnSZ489H+RlhbRrF25+I+aul4r0+HOScz ajVFKDywi7WKQsm2RsmwF5Th9GweM4hu0MH43NZn0tVMWOmEyl7vnfMC4P7Ewx7UE2MY 9xtJvPXaKti7Dn4HSVO/YubDyYxiAcJgWE+wUVeNF2hulCfOy7pYcupvhjza19O0Q3k4 qXxg== MIME-Version: 1.0 X-Received: by 10.194.87.230 with SMTP id bb6mr20822741wjb.157.1446922217262; Sat, 07 Nov 2015 10:50:17 -0800 (PST) Received: by 10.28.183.139 with HTTP; Sat, 7 Nov 2015 10:50:17 -0800 (PST) In-Reply-To: References: Date: Sat, 7 Nov 2015 18:50:17 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Scan-Signature: f9f85a03ab18710b130c40acc03380f0 Subject: Re: LF: VO1NA opds-32 Content-Type: multipart/alternative; boundary=047d7bfe9542c716bd0523f7d466 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: 4887 --047d7bfe9542c716bd0523f7d466 Content-Type: text/plain; charset=UTF-8 GPS receivers are hardly expensive these days I have purchased several Ublox and other makes for a few pounds each They are now so common inside smart-phones and tablets that they have become almost throwaway components Andy G4JNT On 7 November 2015 at 18:39, iz7slz.domenico wrote: > Hi Joe, all > > > --------- > Can the EbNaut phase inversions be done without an absolute time > reference? I'm cheap and lazy so hoping GPS will not be needed. > ----------- > > > You can easly use Wolf DL4YHF NPT client > > http://www.qsl.net/dl4yhf/rsNTP/rsNTP.htm > > EbNaut was succesfully tested, using it, also at 0.2 seconds/symbol. > > Wolf call it "ridiculous" but it is a very clever application ! (thanks > Wolf). > > 73, Domenico / iz7slz > > Sent from Samsung Mobile > > > > > > > > > > > > > > > > > -------- Original message -------- > From: jcraig@mun.ca > Date:07/11/2015 3:45 PM (GMT+01:00) > To: rsgb_lf_group@blacksheep.org > Subject: Re: LF: VO1NA opds-32 > > LF Group, > > Again, thanks to SV8RV DF2JP PA7EY and DF6NM for the reports. > > In my last post I reported the drift was constrained to within 1 Hz. > This should be 1 mHz. Thanks Markus for your assurances that this > should be adequate for EbNaut which I hope to use to send send our > cat's name on LF. The little curls appear often on the QRSS traces on > your high res spectra. Doppler variations were removed from the 10 MHz > WWV signals with harmonic regression when the DOCXO was calibrated > so this effect is seen on LF but not as strongly. > > After reading about EbNaut on Paul Nicholson's pages it seems I have > much catching up ahead. Fasinating stuff! > > Can the EbNaut phase inversions be done without an absolute time > reference? I'm cheap and lazy so hoping GPS will not be needed. > > The Opera will be doing an encore tonight and if the wind stays low > a tower climbing expedition is planned for the afternoon. > > 73 > Joe VO1NA > > > On Sat, 7 Nov 2015, Markus Vester wrote: > > > Hi Joe, LF, > > > > during the last couple of nights, opds detected all of your > transmissions between about 22 and 7:30 UT. > > > > Attached is a zoomed 40 mHz section from my opds-32 spectrogram, showing > your central coherent carrier which contains half of the transmitted > average power. It seems to be about 0.5 mHz below 137477 Hz (possibly due > to a calibration error in my receiver). The 2.7 mHz spaced sidelines during > the early part (bottom) were caused by 6-minute-periodic interruptions from > my own MF WSPR transmissions. However the little curls near the carrier can > presumably be attributed to Doppler-shifted multipath components. The > carrier was still weakly visible for another hour after the last detection. > > > > Comparing the looks of the carrier to earlier IZ7SLZ transmissions, the > stability of the signal and the path seems quite sufficient for half-hour > EbNaut PSK transmissions. Unfortunately I missed the opportunity to save > the raw data and analyze phase evolution using the EbNaut decoder itself - > will try that next time. > > > > All the best, > > Markus (DF6NM) > > > > > > > > > > From: jcraig@mun.ca > > Sent: Saturday, November 07, 2015 12:03 AM > > To: rsgb_lf_group@blacksheep.org > > Subject: Re: LF: last night opera opds detection in km07ks > > > > > > LF Group, > > > > > > I am grateful to Joe DF2JP for his captures QRSS and Opera > > Dionysious SV8RV for his OP decodes to Domenico IZ7SLZ > > for his OPDS decodes, and thanks to DF6NM for opds! > > > > I do not know if my DOCXO is stable enough for EbNaut. > > It was set a couple of years ago and has not drifted more than > > 1 Hz since then. It seems the phase decoherence has stopped > > haunting me. > > > > I am hoping to replace the halyard for the other 100m wire soon. > > > > OP32 again tonight as send this email. > > > > 73 > > Joe > > > > > > --047d7bfe9542c716bd0523f7d466 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
GPS receivers are hardly expensive these days
I have purchased several Ublox and other makes for a few pounds each

They are now so common inside smart-phones and tablet= s that they have become almost throwaway components

Andy=C2=A0 G4JNT

On 7 November 2015 at 18:39, iz7slz.domenico <iz7slz.= domenico@gmail.com> wrote:
=
Hi Joe, all


---------
Can the EbNaut phase inversions be done without an absolute time=C2= =A0
reference?=C2=A0 I'm cheap and lazy so hoping GPS will not be ne= eded.
-----------


You can= easly use Wolf DL4YHF =C2=A0NPT client


EbNaut was succes= fully tested, using it, also at 0.2 seconds/symbol.

Wolf call it "ridiculous" but it is a very clever application != (thanks Wolf).

73, Domenico / iz7slz
Sent from Sam= sung Mobile













=


-------- Original message --------
From: jcraig@mun.ca
Date:07/11/2015 3:45= PM (GMT+01:00)
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: VO1NA= opds-32

LF Group,

Again, thanks to SV8RV DF2JP PA7EY and DF= 6NM for the reports.

In my last post I reported the drift was constr= ained to within 1 Hz.
This should be 1 mHz.=C2=A0 Thanks Markus for your= assurances that this
should be adequate for EbNaut which I hope to use = to send send our
cat's name on LF.=C2=A0 The little curls appear of= ten on the QRSS traces on
your high res spectra.=C2=A0 Doppler variation= s were removed from the 10 MHz
WWV signals with harmonic regression when= the DOCXO was calibrated
so this effect is seen on LF but not as strong= ly.

After=C2=A0 reading about EbNaut on Paul Nicholson's pages i= t seems I have
much catching up ahead.=C2=A0 Fasinating stuff!

C= an the EbNaut phase inversions be done without an absolute time
referen= ce?=C2=A0 I'm cheap and lazy so hoping GPS will not be needed.

T= he Opera will be doing an encore tonight and if the wind stays low
a tow= er climbing expedition is planned for the afternoon.

73
Joe VO1NA=


On Sat, 7 Nov 2015, Markus Vester wrote:

> Hi Joe, LF= ,
>
> during the last couple of nights, opds detected all of yo= ur transmissions between about 22=C2=A0 and 7:30 UT.
>
> Attach= ed is a zoomed 40 mHz section from my opds-32 spectrogram, showing your cen= tral coherent carrier which contains half of the transmitted average power.= It seems to be about 0.5 mHz below 137477 Hz (possibly due to a calibratio= n error in my receiver). The 2.7 mHz spaced sidelines during the early part= (bottom) were caused by 6-minute-periodic interruptions from my own MF WSP= R transmissions. However the little curls near the carrier can presumably b= e attributed to Doppler-shifted multipath components. The carrier was still= weakly visible for another hour after the last detection.
>
> = Comparing the looks of the carrier to earlier IZ7SLZ transmissions, the sta= bility of the signal and the path seems quite sufficient for half-hour EbNa= ut PSK transmissions. Unfortunately I missed the opportunity to save the ra= w data and analyze phase evolution using the EbNaut decoder itself - will t= ry that next time.
>
> All the best,
> Markus (DF6NM)
= >
>
>
>
> From: jcraig@mun.ca
> Sent: Saturday, November 07, 2= 015 12:03 AM
> To: rsgb_lf_group@blacksheep.org
> Subject: Re: LF: l= ast night opera opds detection in km07ks
>
>
> LF Group,<= br>>
>
> I am grateful to Joe DF2JP for his captures QRSS an= d Opera
> Dionysious SV8RV for his OP decodes to Domenico IZ7SLZ
&= gt; for his OPDS decodes, and thanks to DF6NM for opds!
>
> I d= o not know if my DOCXO is stable enough for EbNaut.
> It was set a co= uple of years ago and has not drifted more than
> 1 Hz since then.=C2= =A0 It seems the phase decoherence has stopped
> haunting me.
>=
> I am hoping to replace the halyard for the other 100m wire soon.>
> OP32 again tonight as send this email.
>
> 73> Joe
>
>


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