Return-Path: Received: from mtain-dk08.r1000.mx.aol.com (mtain-dk08.r1000.mx.aol.com [172.29.180.12]) by air-di05.mail.aol.com (v129.4) with ESMTP id MAILINDI054-eac94d1dabb32b2; Fri, 31 Dec 2010 05:08:51 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dk08.r1000.mx.aol.com (Internet Inbound) with ESMTP id D119A380000A5; Fri, 31 Dec 2010 05:08:49 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PYbty-00072t-Va for rs_out_1@blacksheep.org; Fri, 31 Dec 2010 10:08:02 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PYbty-00072k-9j for rsgb_lf_group@blacksheep.org; Fri, 31 Dec 2010 10:08:02 +0000 Received: from nm11-vm0.bullet.mail.ukl.yahoo.com ([217.146.183.244]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1PYbty-0004vQ-7x for rsgb_lf_group@blacksheep.org; Fri, 31 Dec 2010 10:08:02 +0000 Received: from [217.146.183.211] by nm11.bullet.mail.ukl.yahoo.com with NNFMP; 31 Dec 2010 10:07:56 -0000 Received: from [217.146.183.40] by tm4.bullet.mail.ukl.yahoo.com with NNFMP; 31 Dec 2010 10:07:56 -0000 Received: from [127.0.0.1] by omp1025.mail.ukl.yahoo.com with NNFMP; 31 Dec 2010 10:07:56 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 363461.2314.bm@omp1025.mail.ukl.yahoo.com Received: (qmail 35706 invoked by uid 60001); 31 Dec 2010 10:07:56 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.co.uk; s=s1024; t=1293790076; bh=ja4867FmkGVsW11Enpk+O8dS1F6nyPs74VSDnXvd6Oc=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=dx9hqPZMj6AaLOqWPtiGnnLOFE1eUTvWDjDP1uFVKsBjrzLPuhRU5AYd4bGKGUULTBupVOI6UzbINfnzsFfl4xNoWuBcf4WXqkCnnk/I4mqEXhIAW8LY8ZN1Dd55pedMKIxHQ31hvgQrIN3ABjKfeRdkSzLDTD5to92cRoO8/Fo= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.co.uk; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=MNuSlRZ4X5cILFQ0Plt6RK0UKzsi3mt/OwgJsZCCxjtFZac1LenLCrP0Vi488RAJ60oX0p0Y2tn0pySkThA56pTT10nmAQqAzqZv621iqCCN4whrP6OsWObhIZVWHm2jSUJZATcrnHHFEx/XPi1Dhrifp+OUFktB2vPquDaJrZQ=; Message-ID: <186099.35378.qm@web28511.mail.ukl.yahoo.com> X-YMail-OSG: lbfqKS4VM1nzxPv9_JgVexzKFQNKEvd.5Hc5.bvBSZGJXPG rrFNfZb5Z Received: from [81.97.191.183] by web28511.mail.ukl.yahoo.com via HTTP; Fri, 31 Dec 2010 10:07:55 GMT X-Mailer: YahooMailRC/553 YahooMailWebService/0.8.107.285259 References: <15858.38665.qm@web28513.mail.ukl.yahoo.com> Date: Fri, 31 Dec 2010 10:07:55 +0000 (GMT) From: Chris Osborn To: rsgb_lf_group@blacksheep.org In-Reply-To: MIME-Version: 1.0 DomainKey-Status: good (testing) Subject: Re: LF: VLF - G3XIZ transmitting today Content-Type: multipart/alternative; boundary="0-1248001062-1293790075=:35378" 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-m245.2 ; domain : yahoo.co.uk DKIM : pass x-aol-sid: 3039ac1db40c4d1dabb11025 X-AOL-IP: 195.171.43.25 --0-1248001062-1293790075=:35378 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable All noted Andy. The aerial current is about 0.15A The frequency is drifting slightly due to shack cooling and is now=20 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 -=20 Its exactly what I did with my first 73khz SLOWCW Tx prog back in 1997.= =20 SLOWCW was generated, and a part of the 'mark' signal consisted of the cal= lsign=20 being sent at normal CW speeds for identification. G3PLX could see this= fast=20 CW on his received warerfall as a definte reduction in carrier power. =20 On 31 December 2010 09:39, Andy Talbot wrote: SDR-IQ is running, with a 20Hz wide waterfall looking in 0.03Hz FFT bin si= ze. >It took 5 minutes for a calibration signal to show up on the screen. >The paint is drying - slowly :-)0 >=20 >If you want to send QRSS identifier at high speeds (relative) , suggest= you=20 >repeat at 10 or 15 minute regular intervals. They will then show up up= as=20 >periodic reductions in carrier level of about 3dB or so. >=20 >If fact, tht just may be a suitable task for a new bit of software or a= PIC - a=20 >mixed QRSSSSSS generator >=20 >=20 >Andy >www.g4jnt.com > > >=20 >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 =20 >> Later: balloon supported aerial at 50m >> >>Hopefully the system will keep going as the loading coil re-wind=20 >>seems to have done the trick now that the varnish has dried. >> >>73 >>Chris=20 >>G3XIZ >> >> > =20 --0-1248001062-1293790075=:35378 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
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 swi= tch to slow QRSS.

73 Chris XIZ

Fr= om: Andy Talbot <andy.g4jnt@gmail.com>
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 ident= ification.   G3PLX could see this fast CW on his received warerf= all as a definte reduction in carrier power.

 
On 31 December 2010 09:39, Andy Talbot <andy.g4jnt@gmail.c= om> 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 scr= een.
The paint is drying - slowly :-)0
 
If you want to send QRSS identifier at high speeds (relative) , sugge= st 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


 
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:    8.971 855 kHz (nominal but close)
Mode : Con= tinuous carrier with occasional QRSS identifier
Aerial:  Initially= :  40m inverted 'L' at 10m 
           Later: &= nbsp;   balloon supported aerial at 50m

Hopefully the sys= tem 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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