Return-Path: Received: from mtain-de06.r1000.mx.aol.com (mtain-de06.r1000.mx.aol.com [172.29.64.206]) by air-me03.mail.aol.com (v129.4) with ESMTP id MAILINME034-8bab4cec0f65fc; Tue, 23 Nov 2010 14:00:53 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-de06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 76A6938000127; Tue, 23 Nov 2010 14:00:48 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PKy5t-0006zM-0S for rs_out_1@blacksheep.org; Tue, 23 Nov 2010 18:59:57 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PKy5s-0006zD-Bn for rsgb_lf_group@blacksheep.org; Tue, 23 Nov 2010 18:59:56 +0000 Received: from nm19.bullet.mail.ukl.yahoo.com ([217.146.183.193]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1PKy5s-0006rj-86 for rsgb_lf_group@blacksheep.org; Tue, 23 Nov 2010 18:59:56 +0000 Received: from [217.146.183.217] by nm19.bullet.mail.ukl.yahoo.com with NNFMP; 23 Nov 2010 18:59:50 -0000 Received: from [217.146.183.177] by tm10.bullet.mail.ukl.yahoo.com with NNFMP; 23 Nov 2010 18:59:50 -0000 Received: from [127.0.0.1] by omp1018.mail.ukl.yahoo.com with NNFMP; 23 Nov 2010 18:59:50 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 582869.55635.bm@omp1018.mail.ukl.yahoo.com Received: (qmail 4274 invoked by uid 60001); 23 Nov 2010 18:59:50 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.co.uk; s=s1024; t=1290538790; bh=P6aQqvJUHYQ+nsAmaoDqx2txCm9vDPhUQY/ap3uP4ls=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=cFpKBlSma/BQHBbqGW3mKzL1wH64i67/wTL31pGN8qHLp+xobwPEYiK/KCJw6a+pLCPhOx4slaudXhEcSxGPHF9HGq3zuFjWuPMAWAIFLZ5zTuG1jE4cvAwFiQRwT/W5Z0v9y7WDKcDsf6k6p6jmq4ysg2KqdoZt1W8VqUEj7kU= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.co.uk; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=3E8OyAXxeywLdDwNIjfAK0Bn9Ol5YrPitoi5F//I9CyTZKGkkk7y246lzgUMyNQcqDpvNid38ORVcoCquoJl+Xu84OjDuQYMxmRMT2f5rl9u4Mp9sHInkizdCyc8vUvKgjZz8OytiXBWUcTLJx3zJPalDhTcDxi/H2VDA8ijpIk=; Message-ID: <218719.1584.qm@web28108.mail.ukl.yahoo.com> X-YMail-OSG: jP7InK0VM1mwuAHo5VivcijNcQ9z0mxYhXudjXJ5V7Yys1o Lnc3BuktaymRvddX8q0fB2vuqZYL.2PS9DZs87q8xrlDIHnKeYo3URE5TL5H Zr_JorfeZiQPG2t1XmOusY5B3OBEu1pvpV2lskaAzqGHfePuFAK_FF6gsnBW 9tEh0OzmrHCdUiR6mY5BRQTOAlVKRMpx9QsNSfgv4a7Pg2gliJeQ1WXhCZBc 5MRKR8P0y97nGXMKvLN5XesJ0hpR2yQRuHHoyKgZWn1bPhojMqWH.ZsbhJpo CcdwCW3mTanTAfGZGsMgmnMM89AKchfywckNnQ3FGaAHd54RL5r0- Received: from [81.158.122.45] by web28108.mail.ukl.yahoo.com via HTTP; Tue, 23 Nov 2010 18:59:49 GMT X-Mailer: YahooMailClassic/11.4.9 YahooMailWebService/0.8.107.285259 Date: Tue, 23 Nov 2010 18:59:49 +0000 (GMT) From: M0FMT To: rsgb_lf_group@blacksheep.org In-Reply-To: <294616.39798.qm@web28506.mail.ukl.yahoo.com> MIME-Version: 1.0 DomainKey-Status: good (testing) Subject: Re: LF: VLF G3XIZ - QRT Content-Type: multipart/alternative; boundary="0-963756168-1290538789=:1584" 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_FONTCOLOR_UNSAFE,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-d295.1 ; domain : yahoo.co.uk DKIM : pass x-aol-sid: 3039ac1d40ce4cec0f6000d3 X-AOL-IP: 195.171.43.25 --0-963756168-1290538789=:1584 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Does anyone know=20 =A0 a:- What time did=A0the transmission end? Because I have 10s of Mbytes of= recording to backtrack through and I don't want to be looking at the time= when there was no transmission. =A0 b:- Was he sending a steady carrier or what was sent? Dennis thinks it was= steady carrier? =A0I think having a regular pulse like an Alpha stations= would help to identify the carrier through the noise for starters anyway= because a long QRSS or steady carrier is impossible to separate=A0from al= l the steady QRM carriers when you are unsure of what you are looking for= around that frequency especially at this QTH. It is frustrating to watch= a carrier signal for ages only to find it is QRM.=20 73 es GL petefmt I support www.NotSpotTelecom.Com your community Telco / ISP. --- On Tue, 23/11/10, Chris Osborn wrote: From: Chris Osborn Subject: Re: LF: VLF G3XIZ - QRT To: rsgb_lf_group@blacksheep.org Date: Tuesday, 23 November, 2010, 12:57 Hello Stefan / LF, =A0 All was going last night well until I=A0heard sparking from the aerial dis= tribution box each time the carrier was turned off. =A0 After about 45 minutes the PA FET's blew up. =A0 I did some investigation and found that the output transformer has develop= ed=A0some short-circuited turns and so is now useless. =A0 The loading coil seems unharmed so once I get a replacement transformer an= d connect=A0in some=20 new FET's I'll be back in business. =A0 I'll=A0slow down=A0the rise and fall times of the pulse train from the dri= ver unit to the FET's and hopefully cure the sparking. =A0 (Mal)=20 Yes,=A0N.O.V. holders=A0must get prior permission before=A0they transmit= and must stay by the telephone for the duration. =A0 Thanks to all those who looked for my signals. =A0 73=20 Chris G3XIZ =A0 =A0 From: Stefan Sch=E4fer To: rsgb_lf_group@blacksheep.org Sent: Mon, 22 November, 2010 21:32:28 Subject: Re: LF: VLF G3XIZ - QRT Hi Chris, Sorry to hear that. Just checked to mails after beeing abscent the weekend= and wanted to wish good luck too now but just read your mail below. I assume the breakdown immediately de-tuned your system which reduced the= HV? So the damage is limited to a few turns? Has it happened at the 0.2mm= dia wire? BTW i am using 0.4mm dia wire, so not really much more... Good luck in the next tests! 73, Stefan Am 22.11.2010 22:15, schrieb Chris Osborn:=20 Thanks for looking Roger and chaps but game's over for tonight. I've insulation breakdown somewhere in the aerial circuit and I can't fix= it until daylight. Maybe try again next weekend. 73 Chris G3XIZ From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org; Chris Osborn Sent: Mon, 22 November, 2010 20:49:24 Subject: Re: LF: G3XIZ - no copy yet on 8.9719kHz Just swapped from the loop to the earth electrode - band noise stronger -= and there may be a hint of a signal on Chris's frequency. 73s Roger G3XBM On 22 November 2010 20:21, Roger Lapthorn wrote: Have been looking for 20 minutes so far but nothing seen from Chris at abo= ut 34km distance. Will continue to look for the next 2 hours. 73s Roger G3XBM --=20 http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm G3XBM=A0=A0 GQRP 1678=A0=A0=A0 ISWL G11088 --=20 http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm G3XBM=A0=A0 GQRP 1678=A0=A0=A0 ISWL G11088 =20 --0-963756168-1290538789=:1584 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Does anyone know
 
a:- What time did the transmission end? Because I have 10s of Mb= ytes of recording to backtrack through and I don't want to be looking at= the time when there was no transmission.
 
b:- Was he sending a steady carrier or what was sent? Dennis thinks= it was steady carrier?  I think having a regular pulse like an Alpha= stations would help to identify the carrier through the noise for starter= s anyway because a long QRSS or steady carrier is impossible to separate&n= bsp;from all the steady QRM carriers when you are unsure of what you are= looking for around that frequency especially at this QTH. It is frustrati= ng to watch a carrier signal for ages only to find it is QRM.

73= es GL petefmt

I support www.NotSpotTelecom.Com your community Telc= o / ISP.

--- On Tue, 23/11/10, Chris Osborn <g3xiz@yahoo.c= o.uk> wrote:

From: Chris Osborn <g3xiz@yahoo.co.uk>Subject: Re: LF: VLF G3XIZ - QRT
To: rsgb_lf_group@blacksheep.org
= Date: Tuesday, 23 November, 2010, 12:57

Hello Stefan / LF,
 
All was going last night well until I heard sparking from the ae= rial distribution box each
time the carrier was turned off.
 
After about 45 minutes the PA FET's blew up.
 
I did some investigation and found that the output transformer has de= veloped some
short-circuited turns and so is now useless.
 
The loading coil seems unharmed so once I get a replacement transform= er and connect in some
new FET's I'll be back in business.
 
I'll slow down the rise and fall times of the pulse train= from the driver unit to the FET's and hopefully cure the sparking.
 
(Mal)
Yes, N.O.V. holders must get prior permission before t= hey transmit and must stay by the telephone for the duration.
 
Thanks to all those who looked for my signals.
 
73
Chris G3XIZ
 

 
=
From: Stefan Sch=E4fer <= ;schaefer@iup.uni-heidelberg.de>
Sent: Mon, 22 November, 2010 21:32:28
Subject: Re: LF: VLF G3XIZ - QRT
Hi Chris,

Sorry to hear that. Just checked to mails af= ter beeing abscent the weekend and wanted to wish good luck too now but ju= st read your mail below.
I assume the breakdown immediately de-tuned yo= ur system which reduced the HV? So the damage is limited to a few turns?= Has it happened at the 0.2mm dia wire?
BTW i am using 0.4mm dia wire,= so not really much more...

Good luck in the next tests!

73,= Stefan


Am 22.11.2010 22:15, schrieb Chris Osborn:=20
Thanks for looking Roger and chaps but game's over for tonight.
I've insulation breakdown somewhere in the aerial circuit and I can't fi= x it until daylight.

Maybe try again next weekend.

73 Chris= G3XIZ


=
From: Roger Lapthorn <rogerlapthorn@gmail.com= >
To: rsgb_lf_group@bl= acksheep.org; Chris Osborn <= ;g3xiz@yahoo.co.uk>
Sent: Mon, 22 November, 2010 20:49:24
Subject: Re: LF: G3XIZ - no copy yet on 8.9719kHz

Just swapped from the loop to the earth el= ectrode - band noise stronger - and there may be a hint of a signal= on Chris's frequency.

73s
Roger G3XBM

On 22 November 2010 20:21, Roger Lap= thorn <rogerlapthorn@gmail.com>= wrote:
Have= been looking for 20 minutes so far but nothing seen from Chris at about= 34km distance.

Will continue to look for the next 2 hours.

= 73s
Roger G3XBM

--
http://= g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www.youtub= e.com/user/g3xbm
G3XBM   GQRP 1678    ISWL= G11088



--
http:/= /g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www.you= tube.com/user/g3xbm
G3XBM   GQRP 1678   = ISWL G11088


<= /DIV>

=20 --0-963756168-1290538789=:1584--