Return-Path: Received: from mtain-dd09.r1000.mx.aol.com (mtain-dd09.r1000.mx.aol.com [172.29.64.149]) by air-me03.mail.aol.com (v129.4) with ESMTP id MAILINME032-8ba94c88a0de3; Thu, 09 Sep 2010 04:54:54 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dd09.r1000.mx.aol.com (Internet Inbound) with ESMTP id 2621F38000090; Thu, 9 Sep 2010 04:54:53 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OtctD-0000FX-Rv for rs_out_1@blacksheep.org; Thu, 09 Sep 2010 09:53:51 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OtctD-0000FM-50 for rsgb_lf_group@blacksheep.org; Thu, 09 Sep 2010 09:53:51 +0100 Received: from imr-da01.mx.aol.com ([205.188.105.143]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Otct7-0004ki-R2 for rsgb_lf_group@blacksheep.org; Thu, 09 Sep 2010 09:53:51 +0100 Received: from imo-da02.mx.aol.com (imo-da02.mx.aol.com [205.188.169.200]) by imr-da01.mx.aol.com (8.14.1/8.14.1) with ESMTP id o898rZFL022178 for ; Thu, 9 Sep 2010 04:53:35 -0400 Received: from MarkusVester@aol.com by imo-da02.mx.aol.com (mail_out_v42.9.) id l.d25.72db4324 (37529) for ; Thu, 9 Sep 2010 04:53:31 -0400 (EDT) Received: from smtprly-md03.mx.aol.com (smtprly-md03.mx.aol.com [64.12.143.156]) by cia-mb01.mx.aol.com (v129.4) with ESMTP id MAILCIAMB012-d4334c88a0852a9; Thu, 09 Sep 2010 04:53:31 -0400 Received: from Webmail-d115 (webmail-d115.sim.aol.com [205.188.146.16]) by smtprly-md03.mx.aol.com (v129.4) with ESMTP id MAILSMTPRLYMD032-d4334c88a0852a9; Thu, 09 Sep 2010 04:53:25 -0400 References: <4C882E89.6080104@telus.net> <4C888B18.5080301@iup.uni-heidelberg.de> <4C889110.6090800@telus.net> To: rsgb_lf_group@blacksheep.org Date: Thu, 09 Sep 2010 04:53:24 -0400 In-Reply-To: <4C889110.6090800@telus.net> X-MB-Message-Source: WebUI MIME-Version: 1.0 From: Markus Vester X-MB-Message-Type: User X-Mailer: AOL Webmail 32644-STANDARD Received: from 194.138.39.54 by Webmail-d115.sysops.aol.com (205.188.146.16) with HTTP (WebMailUI); Thu, 09 Sep 2010 04:53:24 -0400 Message-Id: <8CD1E139889D521-C38-B035@Webmail-d115.sysops.aol.com> X-Spam-Flag:NO X-AOL-SENDER: MarkusVester@aol.com X-Spam-Score: 0.6 (/) X-Spam-Report: autolearn=disabled,FORGED_AOL_TAGS=0.281,HTML_MESSAGE=0.001,MAILTO_TO_SPAM_ADDR=0.276,UNPARSEABLE_RELAY=0.001 Subject: Re: LF: TIL bumping up the power... Content-Type: multipart/alternative; boundary="--------MB_8CD1E139900DA13_C38_13B16_Webmail-d115.sysops.aol.com" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.6 required=5.0 tests=FORGED_AOL_TAGS,HTML_20_30, HTML_FONTCOLOR_UNKNOWN,HTML_MESSAGE,MAILTO_TO_SPAM_ADDR 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: 3039ac1d40954c88a0dc43cc X-AOL-IP: 193.82.116.20 X-AOL-SPF: domain : blacksheep.org SPF : none ----------MB_8CD1E139900DA13_C38_13B16_Webmail-d115.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Hi Scott, you may be doing a little better than you think: The 600 m^2 loop above gr= ound should have a radiation resistance Rrad =3D 62299 ohm * 600^2 / 2200^4 =3D 0.96 milliohm. Fed by 30 A, this would give 0.86 W radiated power (EMRP), or 1.6 W ERP in= the main lobe. Based on monitoring of the former American Loran-C chains http://www.alice= -dsl.net/df6nm/LoranView/LoranView.htm , I would say that the path between= the Canadian West coast and Europe is one of the most difficult ones. Por= t Hardy and Middletown had only very rare appearances during midwinter, wh= ereas Alaska (especially Port Clarence) traces were often visible around= the day.=20 73 and best of luck, Markus -----Urspr=C3=BCngliche Mitteilung-----=20 Von: Scott Tilley An: rsgb_lf_group@blacksheep.org Verschickt: Do., 9. Sept. 2010, 9:47 Thema: Re: LF: TIL bumping up the power... Hi Stefan=20 =20 Troubles with the tuner at 1.1KW as one of the caps got too warm for comfo= rt. At 1.1KW, 30A into 600m^2 loop. Presently running 400W with 18A.=20 =20 I'll need to wait for the rest of the G3 micas to get here for QRO.=20 =20 73 Scott=20 =20 PS - If anyone has some G3 Mica caps for sale please contact me off list.= TU=20 =20 =20 On 9/9/2010 7:22 AM, Stefan Sch=C3=A4fer wrote:=20 > Hello Scott,=20 >=20 > Which antenna current do you get from 1.1 kW? You have a loop antenna,= > right? Which area, pse?=20 >=20 > 73, gl, Stefan=20 >=20 > PS: Nil here seen so far...=20 >=20 > Am 09.09.2010 02:47, schrieb Scott Tilley:=20 >> I'm going to bump up the juice from 400W to 1.1KW (MOALFA Stun mode) >>= tonight. +4dB.=20 >>=20 >> 137778.0 +0.25Hz DAH, DFCW120, my sunset to sunrise.=20 >>=20 >> According to the my most conservative calculations that will be about= >> 0.5mW ERP=20 >>=20 >> I may revert back to 400W if I have any sign of trouble.=20 >>=20 >> 73 Scott=20 >> VE7TIL CN89dk=20 >> http://www3.telus.net/sthed/argo/=20 >>=20 =20 ----------MB_8CD1E139900DA13_C38_13B16_Webmail-d115.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8" Hi Scott,

you may be doing a little better than you think: The 600 m^2 loo= p above ground should have a radiation resistance
 Rrad =3D 62299 ohm * 600^2 / 2200^4 =3D 0.96 milliohm.
Fed by 30 A, this would give 0.86 W radiated power (EMRP), or 1.6 W= ERP in the main lobe.
 
Based on monitoring of the former American Loran-C chains&n= bsp;htt= p://www.alice-dsl.net/df6nm/LoranView/LoranView.htm , I would say= that the path between the Canadian West coast and Europe= is one of the most difficult ones. Port Hardy and Middletown had only ver= y rare appearances during midwinter, whereas Alaska (especi= ally Port Clarence) traces were often visible around the day. 
 
73 and best of luck,
Markus

-----Urspr=C3=BCngliche Mitteilung-----
Von: Scott Tilley <sthed475@telus.net>
An: rsgb_lf_group@blacksheep.org
Verschickt: Do., 9. Sept. 2010, 9:47
Thema: Re: LF: TIL bumping up the power...

Hi Stefan 
 
Troubles with the tuner at 1.1KW as one of the caps got too warm for comfo= rt. At 1.1KW, 30A into 600m^2 loop. Presently running 400W with 18A. =
 
I'll need to wait for the rest of the G3 micas to get here for QRO. <= br>  
73 Scott 
 
PS - If anyone has some G3 Mica caps for sale please contact me off list.= TU 
 
 
On 9/9/2010 7:22 AM, Stefan Sch=C3=A4fer wrote: 
> Hello Scott, 
> 
> Which antenna current do you get from 1.1 kW? You have a loop antenna= , > right? Which area, pse? 
> 
> 73, gl, Stefan 
> 
> PS: Nil here seen so far... 
> 
> Am 09.09.2010 02:47, schrieb Scott Tilley: 
>> I'm going to bump up the juice from 400W to 1.1KW (MOALFA Stun mo= de) >> tonight. +4dB. 
>> 
>> 137778.0 +0.25Hz DAH, DFCW120, my sunset to sunrise. 
>> 
>> According to the my most conservative calculations that will be= about >> 0.5mW ERP 
>> 
>> I may revert back to 400W if I have any sign of trouble.  >> 
>> 73 Scott 
>> VE7TIL CN89dk 
>> htt= p://www3.telus.net/sthed/argo/ 
>> 
 
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