Return-Path: Received: from mtain-mg12.r1000.mx.aol.com (mtain-mg12.r1000.mx.aol.com [172.29.96.212]) by air-mc05.mail.aol.com (v129.4) with ESMTP id MAILINMC051-a9674d1dae072d2; Fri, 31 Dec 2010 05:18:47 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mg12.r1000.mx.aol.com (Internet Inbound) with ESMTP id 808A538000083; Fri, 31 Dec 2010 05:18:42 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PYc3P-0007Fs-3I for rs_out_1@blacksheep.org; Fri, 31 Dec 2010 10:17:47 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PYc3O-0007Fj-Il for rsgb_lf_group@blacksheep.org; Fri, 31 Dec 2010 10:17:46 +0000 Received: from mail-iy0-f171.google.com ([209.85.210.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PYc3M-00052A-1M for rsgb_lf_group@blacksheep.org; Fri, 31 Dec 2010 10:17:46 +0000 Received: by iyj21 with SMTP id 21so10495717iyj.16 for ; Fri, 31 Dec 2010 02:17:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=GVnLBuqw5yKp5OhD4yIQ7Um+xR9PT8AcapiztMe4rx4=; b=k1cFgRKwwhduV/zRNbqDv56TFMzCanRqQH+KewGawcQCibiTynr71ZOE68qL0t/2RN a2mdCNJCk/eqDPENy6jwyAMxP8d65sKd6ZbYa4oAjKGo7TboTMW6T6plNsCzQucyogSs BCsEJ2KVdfmOxTu1uTdzV/dhrOwP1fqG5OqgU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=Mw0JG87tNWv2lSNj1u6RxJ/02E3GSOKhvFqvovpjJ6w1I3zkUnco8OGvHYnKcSFypG xHdbOr3XpHp+CTMGwmc6g2iSyTyx69bf+IteK26ICK7Hy8UJnPhxE/0eoRIFb08JvRdD OcTMV6lmvKRibY2rViX1hWndabTp5DemO9a08= MIME-Version: 1.0 Received: by 10.231.13.137 with SMTP id c9mr17177454iba.37.1293790657670; Fri, 31 Dec 2010 02:17:37 -0800 (PST) Received: by 10.231.200.211 with HTTP; Fri, 31 Dec 2010 02:17:37 -0800 (PST) In-Reply-To: <186099.35378.qm@web28511.mail.ukl.yahoo.com> References: <15858.38665.qm@web28513.mail.ukl.yahoo.com> <186099.35378.qm@web28511.mail.ukl.yahoo.com> Date: Fri, 31 Dec 2010 10:17:37 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: VLF - G3XIZ transmitting today Content-Type: multipart/alternative; boundary=0022150467ef906ea20498b21c88 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE 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: mail_rly_antispam_dkim-d250.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d60d44d1dae021e9b X-AOL-IP: 195.171.43.25 X-Mailer: Unknown (No Version) --0022150467ef906ea20498b21c88 Content-Type: text/plain; charset=ISO-8859-1 rgr. Nothing seen so far on 8972. paint is drying slowly :-) Andy On 31 December 2010 10:07, Chris Osborn wrote: > All noted Andy. > > The aerial current is about 0.15A > The frequency is drifting slightly due to shack cooling and is now > 8.971 870 kHz > > I'll try the balloon aerial in about half an hour then switch to slow QRSS. > > 73 Chris XIZ > > ------------------------------ > *From:* Andy Talbot > *To:* rsgb_lf_group@blacksheep.org > *Sent:* Fri, 31 December, 2010 9:43:41 > *Subject:* Re: LF: VLF - G3XIZ transmitting today > > Thinking about that - > Its exactly what I did with my first 73khz SLOWCW Tx prog back in 1997. > SLOWCW was generated, and a part of the 'mark' signal consisted of the > callsign being sent at normal CW speeds for identification. G3PLX could > see this fast CW on his received warerfall as a definte reduction in carrier > power. > > > On 31 December 2010 09:39, Andy Talbot wrote: > >> SDR-IQ is running, with a 20Hz wide waterfall looking in 0.03Hz FFT bin >> size. >> It took 5 minutes for a calibration signal to show up on the screen. >> The paint is drying - slowly :-)0 >> >> If you want to send QRSS identifier at high speeds (relative) , suggest >> you repeat at 10 or 15 minute *regular* intervals. They will then show >> up up as periodic reductions in carrier level of about 3dB or so. >> >> If fact, tht just may be a suitable task for a new bit of software or a >> PIC - a mixed QRSSSSSS generator >> >> >> Andy >> www.g4jnt.com >> >> >> >> On 31 December 2010 08:44, Chris Osborn wrote: >> >>> LF, >>> >>> I shall be transmitting VLF today starting at 09.00 Z >>> >>> Freq: 8.971 855 kHz (nominal but close) >>> Mode : Continuous carrier with occasional QRSS identifier >>> Aerial: Initially: 40m inverted 'L' at 10m >>> Later: balloon supported aerial at 50m >>> >>> Hopefully the system will keep going as the loading coil re-wind >>> seems to have done the trick now that the varnish has dried. >>> >>> 73 >>> Chris >>> G3XIZ >>> >>> >> > > --0022150467ef906ea20498b21c88 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
rgr.
Nothing seen so far on 8972.=A0
paint is drying slowly :-)
=A0
Andy


=A0
On 31 December 2010 10:07, Chris Osborn <g3xiz@yahoo.co.uk> wrote:
All noted Andy.

The aerial current is about 0.15A
The frequ= ency is drifting slightly due to shack cooling and is now
8.971 870 kH= z

I'll try the balloon aerial in about half an hour then switch= to slow QRSS.

73 Chris XIZ
=
From: Andy Talbot <andy.g4jnt@gmail.c= om>
To: rsgb_lf_group@b= lacksheep.org
Sent: Fri, 31 December, 20= 10 9:43:41
Subject: Re:= LF: VLF - G3XIZ transmitting today

Thinking about that -
Its exactly what=A0I did with my first 73khz SLOWCW Tx=A0 prog back= in 1997.=A0=A0 SLOWCW was generated, and a part of the 'mark' sig= nal consisted of the callsign being sent at normal CW speeds for identific= ation.=A0=A0 G3PLX could see this fast CW on his received warerfall as a= definte reduction in carrier power.

=A0
On 31 December 2010 09:39, Andy Talbot <andy.g4jnt@gmail.com> wrote:
SDR-IQ is running, with a 20Hz wide waterfall looking in 0.03Hz FFT= bin size.
It took 5 minutes for=A0a calibration signal to show up on the screen= .
The paint is drying - slowly :-)0
=A0
If you want to send QRSS identifier at high speeds (relative) , sugge= st you repeat at 10 or 15 minute regular intervals.=A0 They will th= en show up up as periodic reductions in carrier level of about 3dB or so.<= /div>
=A0
If fact, tht just may be a suitable task for a new bit of software or= a PIC=A0- a mixed QRSSSSSS generator
=A0
=A0
Andy


=A0
On 31 December 2010 08:44, Chris Osborn <g3xiz@yahoo.co.uk> wrote:
LF,

I shall be transmitting VLF today starting at 09.00 Z
<= br>Freq:=A0=A0=A0 8.971 855 kHz (nominal but close)
Mode : Continuous= carrier with occasional QRSS identifier
Aerial:=A0 Initially:=A0 40m= inverted 'L' at 10m=A0
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Later:=A0=A0=A0=A0 balloon supported aerial= at 50m

Hopefully the system will keep going as the loading coil re= -wind
seems to have done the trick now that the varnish has dried.
=
73
Chris
G3XIZ





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