Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-me03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 034DA380000A3; Sat, 24 Nov 2012 05:28:03 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TcCwq-0007ZI-7O for rs_out_1@blacksheep.org; Sat, 24 Nov 2012 10:26:56 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TcCwp-0007Z9-L0 for rsgb_lf_group@blacksheep.org; Sat, 24 Nov 2012 10:26:55 +0000 Received: from mk-filter-4-a-1.mail.tiscali.co.uk ([212.74.100.55] helo=mk-filter-4-a-1.mail.uk.tiscali.com) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1TcCwm-00015t-Se for rsgb_lf_group@blacksheep.org; Sat, 24 Nov 2012 10:26:54 +0000 X-Trace: 821788284/mk-filter-4.mail.uk.tiscali.com/B2C/$THROTTLED_DYNAMIC/b2c-CUSTOMER-DYNAMIC-IP/88.104.33.1/None/g4wgt@tiscali.co.uk X-SBRS: None X-RemoteIP: 88.104.33.1 X-IP-MAIL-FROM: g4wgt@tiscali.co.uk X-SMTP-AUTH: X-Originating-Country: GB/UNITED KINGDOM X-MUA: Microsoft Windows Mail 6.0.6002.18197Produced By Microsoft MimeOLE V6.1.7601.17609 X-IP-BHB: Once X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AogFACKgsFBYaCEB/2dsb2JhbAAqGqkChHeSRRdzgh4BAQQBCE4CHAoGAQQFAwMRBAEBCiUzBhYIBgESCAmHagMJCggtsASNfotOaYNgYQOIKZMwhVUIhQ2Cbw X-IronPort-AV: E=Sophos;i="4.83,313,1352073600"; d="scan'208,217";a="821788284" Received: from 88-104-33-1.dynamic.dsl.as9105.com (HELO GaryAsus) ([88.104.33.1]) by smtp.tiscali.co.uk with SMTP; 24 Nov 2012 10:26:31 +0000 Message-ID: <98AECB8A81F74874B1B05C0D6B558F02@GaryAsus> From: "Gary - G4WGT" To: , References: <8CF97D11C5AE652-1638-E77C@webmail-m030.sysops.aol.com> In-Reply-To: Date: Sat, 24 Nov 2012 10:26:27 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.1.7601.17609 X-Spam-Score: -0.4 (/) 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: Hi Marcus, Joe & LF, After a failure of my 136kHz sound card Rx pre-amp due to a mains surge the grabber was back on from about 2200utc last night. I note there are at least 3 visible signals on my slow grab but I can only ID Joe VO1NA. The other two ? are not identifiable due o the very slow scroll. [...] Content analysis details: (-0.4 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [212.74.100.55 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (g4wgt[at]tiscali.co.uk) -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.4 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 86b6d14137f1f41166b7b27a17921f7a Subject: Re: LF: VO1NA at 20:00 - or not? Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01CDCA2E.2978C760" 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_MESSAGE, MISSING_OUTLOOK_NAME 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-sid: 3039ac1d608b50b0a1337e66 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_0009_01CDCA2E.2978C760 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Marcus, Joe & LF, After a failure of my 136kHz sound card Rx pre-amp due to a mains surge = the grabber was back on from about 2200utc last night. I note there are at least 3 visible signals on my slow grab but I can = only ID Joe VO1NA. The other two ? are not identifiable due o the very = slow scroll. Can the owners of the other signals please confirm the calls. This mornings early grab can be seen at :- https://www.dropbox.com/s/rvd79pkx4ezntf3/137780Hz-1211240800.jpg 73, Gary - G4WGT. ----- Original Message -----=20 From: Markus Vester=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Saturday, November 24, 2012 8:30 AM Subject: Re: LF: VO1NA at 20:00 - or not? Joe,=20 thanks for the info. That must have been around sunset on your side... = the signal then disappeared for a while and became again visible after = midnight UT. Coherent keying would be beneficial as it generates a sharp central = line in the spectrum which aids detection of below-noise QRSS or Opera = signals. The source doesn't need to be referenced to GPS or similar, any = stable oscillator will suffice as long as it is not interrupted by the = keying. If you are now using a divider to drive the PA you would need to = let the divider continue during key-up, and gate one of the subsequent = driver stages instead. It is also possible to generate coherent FSK or DFCW but this requires = careful adjustment of the symbol timing and frequncy shift so that df * = dt is an integer number (as in WSPR or WSJT-X). Best 73, Markus (DF6NM) From: jcraig@mun.ca=20 Sent: Saturday, November 24, 2012 3:11 AM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: VO1NA at 20:00 - or not? Dear Markus, Group. Thank-you for the report. Yes, VO1NA is on the air however there is = still=20 work needed towards achieving phase coherence keying! The TX is a 100 watt class E: an IRFP260N driven by a TC4427. Hopefully the Decca will be back in service soon. 73 Joe On Fri, 23 Nov 2012, Markus Vester wrote: > Nice signals from the east (YO and AGC in red) and west (an = early?blue NA on 137777), simultaneously in the TA window > http://www.alice-dsl.net/df6nm/grabber/Grabber.htm > ? > > Well at?least that's what I thought,?but no?trace?of VO1NA?yet on > http://www.w1vd.com/grabber.html > ? > Joe, are you on air? > ? > Best 73, > Markus (DF6NM) > > ? > > This electronic communication is governed by the terms and conditions = at = http://www.mun.ca/cc/policies/electronic_communications_disclaimer_2012.p= hp ------=_NextPart_000_0009_01CDCA2E.2978C760 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Marcus, Joe & LF,
 
After a failure of my 136kHz sound card = Rx pre-amp=20 due to a mains surge the grabber was back on from about 2200utc last=20 night.
 
I note there are at least 3 visible = signals on my=20 slow grab but I can only ID Joe VO1NA. The other two ? are not = identifiable=20 due o the very slow scroll.
 
Can the owners of the other signals = please confirm=20 the calls.
 
This mornings early grab can be seen at = :-
 
https://www.dropbox.com/s/rvd79pkx4ezntf3/137780Hz-1211240800.jpg
 
73,
 
Gary - G4WGT.
 
----- Original Message -----
From:=20 Markus=20 Vester
Sent: Saturday, November 24, = 2012 8:30=20 AM
Subject: Re: LF: VO1NA at 20:00 = - or=20 not?

Joe,
 
thanks for the info. That must have = been around=20 sunset on your side... the signal then disappeared for a while = and became=20 again visible after midnight UT.
 
Coherent keying would be beneficial = as it=20 generates a sharp central line in the spectrum which aids detection=20 of below-noise QRSS or Opera signals. The source doesn't = need to be=20 referenced to GPS or similar, any stable oscillator will suffice as = long as it=20 is not interrupted by the keying. If you are now using a divider = to drive=20 the PA you would need to let the divider continue during key-up,=20 and gate one of the subsequent driver stages = instead.
 
It is also possible to generate = coherent FSK or=20 DFCW but this requires careful adjustment of the symbol timing and = frequncy=20 shift so that df * dt is an integer number (as in WSPR or=20 WSJT-X).
 
Best 73,
Markus (DF6NM)
 

Sent: Saturday, November 24, 2012 3:11 AM
Subject: Re: LF: VO1NA at 20:00 - or = not?

Dear Markus, Group.

Thank-you for the = report.  Yes,=20 VO1NA is on the air however there is still
work needed towards = achieving=20 phase coherence keying!  The TX is a 100
watt class E: an = IRFP260N=20 driven by a TC4427.

Hopefully the Decca will be back in service = soon.

73
Joe

On Fri, 23 Nov 2012, Markus Vester=20 wrote:

> Nice signals from the east (YO and AGC in red) and = west (an=20 early?blue NA on 137777), simultaneously in the TA window
> http://www.al= ice-dsl.net/df6nm/grabber/Grabber.htm
>=20 ?
>
> Well at?least that's what I thought,?but no?trace?of = VO1NA?yet on
> http://www.w1vd.com/grabber.htm= l
>=20 ?
> Joe, are you on air?
> ?
> Best 73,
> = Markus=20 (DF6NM)
>
> ?
>
>

This electronic = communication=20 is governed by the terms and conditions at
http://www.mun.ca/cc/policies/electronic_communications_discl= aimer_2012.php

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