Return-Path: Received: from rly-dc05.mx.aol.com (rly-dc05.mail.aol.com [172.19.136.34]) by air-dc08.mail.aol.com (v121.4) with ESMTP id MAILINDC081-b2147fe8a3220b; Thu, 10 Apr 2008 17:44:48 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-dc05.mx.aol.com (v121.4) with ESMTP id MAILRELAYINDC055-b2147fe8a3220b; Thu, 10 Apr 2008 17:44:22 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Jk4Yk-0007mJ-4a for rs_out_1@blacksheep.org; Thu, 10 Apr 2008 22:43:54 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Jk4Yj-0007mA-EJ for rsgb_lf_group@blacksheep.org; Thu, 10 Apr 2008 22:43:53 +0100 Received: from smtp-out2.blueyonder.co.uk ([195.188.213.5]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Jk4Yg-00029H-IY for rsgb_lf_group@blacksheep.org; Thu, 10 Apr 2008 22:43:53 +0100 Received: from [172.23.170.137] (helo=anti-virus01-08) by smtp-out2.blueyonder.co.uk with smtp (Exim 4.52) id 1Jk4Yg-00041T-4y for rsgb_lf_group@blacksheep.org; Thu, 10 Apr 2008 22:43:50 +0100 Received: from [82.40.42.71] (helo=p4) by asmtp-out4.blueyonder.co.uk with esmtp (Exim 4.52) id 1Jk4Yf-0004kx-Ci for rsgb_lf_group@blacksheep.org; Thu, 10 Apr 2008 22:43:49 +0100 Received: from 127.0.0.1 (AVG SMTP 7.5.519 [269.22.11/1368]); Thu, 10 Apr 2008 22:43:49 +0100 Message-ID: <010501c89b53$f5f2a590$6401a8c0@p4> From: "Mark" To: References: <51615_9A0TCP@hamradio><1207423536.47f7d230ca83e@imp.netikka.net><20080405213023.0bd573cd@lurcher.twatt.local> <20080405214604.4be30070@lurcher.twatt.local> <01cf01c89a7b$d11d9190$6401a8c0@p4> <103752187.1207778726.155828208.18574@mcgi56.rambler.ru> <020b01c89a92$4ebef7e0$6401a8c0@p4> <021801c89a96$b8459940$6401a8c0@p4> <1045923049.1207784095.59058408.28390@mcgi59.rambler.ru> <000201c89add$5c787ff0$6401a8c0@p4> <8D27CB0854BA4CF190B64B640BB1311D@Amilo3205> Date: Thu, 10 Apr 2008 22:43:48 +0100 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 Mime-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Re: Re: Testing upgraded 500KHz system -- reports tks Content-Type: multipart/mixed; boundary="=======AVGMAIL-47FE8A1543BC=======" 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : ? --=======AVGMAIL-47FE8A1543BC======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_0102_01C89B5C.578E76F0" ------=_NextPart_000_0102_01C89B5C.578E76F0 Content-Type: text/plain; charset=windows-1251 Content-Transfer-Encoding: quoted-printable Hi Markus and group. The source I have been using recently is xtal controlled, and whilst not tem= perature controlled, should not vary much. The frequency as measured tonight, using a GPS locked frequency standard, is= 502.2268 KHz, drifting slowly LF as it warms up. in the time taken to write this it has gone to 502.2263. The Xtal oscillator only runs (at 8MHz )on TX. when needed I have a DDS based synth that gives me full coverage of the band= . For now I am testing on the frequency above ore thereabouts, and will be run= ning on and off this evening. Regards mark GM4ISM ----- Original Message -----=20 From: Markus Vester=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Thursday, April 10, 2008 9:52 PM Subject: LF: Re: Testing upgraded 500KHz system -- reports tks Hi Mark, yes, you are producing a nice signal into Nuernberg. What seems a little o= dd is that both Nicolas and Roman show it on 502.200 kHz, whereas my reading= would be more like 502.225. Give or take a pixel on the ruler, but my cal s= houldn't be that far off... Reading about wind, moisture and antenna voltage effects sounds very famil= iar - my 200 pF on 137 k is definitely a fair-weather-only type ;-) Best wishes Markus, DF6NM ----- Original Message -----=20 From: "Mark" To: Sent: Thursday, April 10, 2008 9:34 AM Subject: Re: LF: Testing upgraded 500KHz system -- reports tks > Roman, Nicolas > Thanks for the reports guys Sure was weak Roman, hope stronger on the= =20 > other antenna, but does look like it may have been me. > a little more work to interface the PC, then I can have the system in be= acon=20 > mode more easily. >=20 > 10dB more power sure does get things warmer. I have killed several FETS,= had=20 > mica caps sweating wax, toroids getting so hot you can smell them and=20 > insulators on the antenna complaining. The plus side is that I can now=20 > strike a flourescent tube by putting it within a few cm of the antenna,=20= and=20 > it keeps going like a light sabre a little away from the antenna. Oh an= d=20 > the signal seems to get a bit further :<) > All good fun > Regards > Mark GM4ISM IO85AR > www.dc2light.co.uk >=20 >=20 >=20 ----------------------------------------------------------------------------= -- No virus found in this incoming message. Checked by AVG.=20 Version: 7.5.519 / Virus Database: 269.22.11/1368 - Release Date: 09/04/20= 08 16:20 ------=_NextPart_000_0102_01C89B5C.578E76F0 Content-Type: text/html; charset=windows-1251 Content-Transfer-Encoding: quoted-printable
Hi Markus and group.
The source I have been using rece= ntly is=20 xtal controlled, and whilst not temperature controlled, should not vary=20 much.
The frequency as measured tonight, using a=20= GPS=20 locked frequency standard, is 502.2268 KHz, drifting slowly LF as it warms=20 up.
in the time taken to write this it has gone= to=20 502.2263.
The Xtal oscillator only runs (at 8MHz )on=20 TX.
when needed I have a DDS based synth that g= ives me=20 full coverage of the band.
For now I am testing on the frequency above= ore=20 thereabouts, and will be running on and off this evening.
Regards
mark GM4ISM
 
----- Original Message -----
Sent: Thursday, April 10, 2008 9:52= =20 PM
Subject: LF: Re: Testing upgraded 5= 00KHz=20 system -- reports tks

Hi=20 Mark,
 
yes, you are producing a nice signal into= =20 Nuernberg. What seems a little odd is that both Nicolas and Roman show it=20= on=20 502.200 kHz, whereas my reading would be more like 502.225. Give or take a= =20 pixel on the ruler, but my cal shouldn't be that far off...
 
Reading about wind, moisture and antenna=20= voltage=20 effects sounds very familiar - my 200 pF on 137 k is definitely a=20 fair-weather-only type ;-)
 
Best wishes
Markus, DF6NM
 
 
----- Original Message -----
Sent: Thursday, April 10, 2008 9:34=20 AM
Subject: Re: LF: Testing upgraded 500KHz=20= system=20 -- reports tks

> Roman, Nicolas
> Thanks for the reports=20 guys    Sure was weak Roman, hope stronger on the
>=20 other antenna, but does look like it may have been me.
> a little mo= re=20 work to interface the PC, then I can have the system in beacon
> mo= de=20 more easily.
>
> 10dB more power sure does get things warmer.= I=20 have killed several FETS, had
> mica caps sweating wax, toroids get= ting=20 so hot you can smell them and
> insulators on the antenna complaini= ng.=20 The plus side is that I can now
> strike a flourescent tube by putt= ing=20 it within a few cm of the antenna, and
> it keeps going like a ligh= t=20 sabre a little away from the antenna.  Oh and
> the signal see= ms=20 to get a bit further :<)
> All good fun
> Regards
> M= ark=20 GM4ISM IO85AR
> www.dc2light.co.uk
>
>
>

No virus found in this incoming message.
Checked by AVG.=20
Version: 7.5.519 / Virus Database: 269.22.11/1368 - Release Date:=20 09/04/2008 16:20
------=_NextPart_000_0102_01C89B5C.578E76F0-- --=======AVGMAIL-47FE8A1543BC======= Content-Type: text/plain; x-avg=cert; charset=us-ascii Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Content-Description: "AVG certification" No virus found in this outgoing message. Checked by AVG.=20 Version: 7.5.519 / Virus Database: 269.22.11/1368 - Release Date: 09/04/2008= 16:20 --=======AVGMAIL-47FE8A1543BC=======--