Return-Path: Received: from mtain-mc07.r1000.mx.aol.com (mtain-mc07.r1000.mx.aol.com [172.29.96.79]) by air-df08.mail.aol.com (v129.4) with ESMTP id MAILINDF081-5efe4c95fc81148; Sun, 19 Sep 2010 08:05:21 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mc07.r1000.mx.aol.com (Internet Inbound) with ESMTP id 233CE380000A1; Sun, 19 Sep 2010 08:05:20 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OxIcf-0005c9-4v for rs_out_1@blacksheep.org; Sun, 19 Sep 2010 13:03:57 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OxIcU-0005c0-LT for rsgb_lf_group@blacksheep.org; Sun, 19 Sep 2010 13:03:46 +0100 Received: from smtp6.freeserve.com ([193.252.22.190]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OxIcT-0003cC-Fb for rsgb_lf_group@blacksheep.org; Sun, 19 Sep 2010 13:03:47 +0100 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3603.me.freeserve.com (SMTP Server) with ESMTP id EA7687000087 for ; Sun, 19 Sep 2010 14:03:39 +0200 (CEST) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3603.me.freeserve.com (SMTP Server) with ESMTP id DD9C2700008B for ; Sun, 19 Sep 2010 14:03:39 +0200 (CEST) Received: from AGB (unknown [91.110.81.202]) by mwinf3603.me.freeserve.com (SMTP Server) with SMTP id 4876F7000087 for ; Sun, 19 Sep 2010 14:03:37 +0200 (CEST) X-ME-UUID: 20100919120337296.4876F7000087@mwinf3603.me.freeserve.com Message-ID: <72058F817D724A7D83DC9E4758482D12@AGB> From: "Graham" To: References: <4C95EEA4.20904@iup.uni-heidelberg.de> In-Reply-To: Date: Sun, 19 Sep 2010 13:03:26 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8089.726 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8089.726 X-Antivirus: avast! (VPS 100919-0, 19/09/2010), Outbound message X-Antivirus-Status: Clean X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: WSPR Beacon -RIP Content-Type: multipart/alternative; boundary="----=_NextPart_000_0056_01CB57FB.0C5EFA70" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,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: 3039ac1d604f4c95fc7f2215 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_0056_01CB57FB.0C5EFA70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sorry to see that Andy,=20 The metal tape looks suspicious, damage very intense at the lower = far corner , shelf is most probably heat damage from the fire as= under the coil looks intact ? I for one will be having a quick look in the shed, round the 500 at= u make sure nothing is 'too' close G.=20 From: Andy Talbot=20 Sent: Sunday, September 19, 2010 12:22 PM To: rsgb_lf_group@blacksheep.org ; jfell@tesco.net ; Julian@ygf.org.uk= =20 Subject: Re: LF: WSPR Beacon -RIP http://www.g4jnt.com/QRO_LF_DoesThis.JPG=20 http://www.g4jnt.com/Melted_ATU_Cabin.JPG =20 Not sure what started burning, but it was in the bottom corner by the= look of things which is well away from the high voltage stuff at the= top. =20 The system ran for years using a plastic dustbin as the coil housing,= even at 800 Watts occasionally. But from the way the shelf has melte= d, it looks as if the plastic used in those B+Q sheds absorbs RF. Pi= ty, it was going to house HF ATU=20 Andy www.g4jnt.com 2010/9/19 Stefan Sch=E4fer Andy,=20 QRO can be an exciting adventure! :-) 73, GL, Stefan Am 19.09.2010 12:54, schrieb Andy Talbot:=20 Well, it was nice while it lasted. Went downstairs and smelt smok= e. Heard a crackling noise coming from the plastic "shed" housing th= e ATU . Opened the door, saw flames and melted plastic. Two buckets of water before they were extinguished - plastic B+Q= sheds burn very well Goodbye antenna tuning cabin :-( The loading coil and antenna survived. My credibiilty didn't :-= ( Pictures will follow Andy www.g4jnt.com On 19 September 2010 11:44, Andy Talbot wrote: Sinece theere were no reports of my QRP WSPR beacon last night= two conclusions can be drawn : a) No One was listening b) Its too weak. To resolve a) ...... ?? Not a lot I can do apart from post th= is message :-( But to resolve b), I've now fired up the big switchmode PA htt= p://www.g4jnt.com/137tx.pdf =20 Generating about 600 Watts this will increase ERP into the regio= n of 17dBm (The WSPR message says 13dBm, but its lying. I've already run up= and downstairs with the PIC programmer, and don't want to do it again= ) =20 Andy www.g4jnt.com ------=_NextPart_000_0056_01CB57FB.0C5EFA70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Sorry to see  that Andy, =
 
The metal  tape looks suspicious= , damage=20  very intense at the lower  far  corner , shelf is= most=20 probably heat damage  from the  fire as under the  coil= looks=20 intact ?
 
I for  one will  be having= a quick look=20 in the shed, round the  500 atu  make  sure nothing is= 'too'=20 close
 
G.
 
 

Sent: Sunday, September 19, 2010 12:22 PM
Subject: Re: LF: WSPR Beacon -RIP

Not sure what started burning, but it was in the bottom corner by= the look=20 of things which is well away from the high voltage stuff at the= =20 top.  
 
The system ran for years using a plastic dustbin as the coil hous= ing, even=20 at 800 Watts occasionally.  But from the way the shelf has melted= , it looks=20 as if the plastic used in those B+Q sheds absorbs RF.   Pity= , it was=20 going to house HF ATU
 
 
2010/9/19 Stefan Sch=E4fer &l= t;schaefer@iup.uni= -heidelberg.de>
Andy,

QRO can be= an exciting=20 adventure! :-)

73, GL,

Stefan



Am 19.09.= 2010=20 12:54, schrieb Andy Talbot:=20
Well, it was nice while it lasted.  Went downstairs and= smelt=20 smoke.   Heard a crackling noise coming from the plastic= "shed"=20 housing the ATU .   Opened the door, saw flames and melt= ed=20 plastic.
 
Two buckets of water before they were extinguished - plastic= B+Q sheds=20 burn very well
 
Goodbye antenna tuning cabin :-(
 
The loading coil and antenna survived.   My credibi= ilty=20 didn't  :-(
 
Pictures will follow
On 19 September 2010 11:44, Andy Talbot= <andy.g4jnt@googlemail.com> wrote= :
Sinece theere were no reports of my QRP WSPR beacon last ni= ght two=20 conclusions can be drawn :
 
a)   No One was listening
b)   Its too weak.
 
To resolve   a) ...... ??  Not a lot I can= do apart=20 from post this message :-(
 
But to resolve b), I've now fired up the big switchmode=20 PA   http://www.g4jnt.com/137tx.pdf  &nbs= p;   
Generating about 600 Watts this will increase ERP into= the=20 region of  17dBm
(The WSPR message says 13dBm, but its lying. I've alre= ady run up=20 and downstairs with the PIC programmer, and don't want to do it= =20 again)
 
 




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