Return-Path: Received: from mtain-dh04.r1000.mx.aol.com (mtain-dh04.r1000.mx.aol.com [172.29.65.24]) by air-mb06.mail.aol.com (v129.4) with ESMTP id MAILINMB064-a77f4d6459551b7; Tue, 22 Feb 2011 19:48:21 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dh04.r1000.mx.aol.com (Internet Inbound) with ESMTP id A6D3138000095; Tue, 22 Feb 2011 19:48:20 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Ps2sh-0003K6-8q for rs_out_1@blacksheep.org; Wed, 23 Feb 2011 00:47:03 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Ps2sg-0003Jx-J7 for rsgb_lf_group@blacksheep.org; Wed, 23 Feb 2011 00:47:02 +0000 Received: from nm9.bullet.mail.ukl.yahoo.com ([217.146.182.250]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1Ps2se-00035Q-Uz for rsgb_lf_group@blacksheep.org; Wed, 23 Feb 2011 00:47:02 +0000 Received: from [217.146.183.182] by nm9.bullet.mail.ukl.yahoo.com with NNFMP; 23 Feb 2011 00:46:55 -0000 Received: from [217.146.183.60] by tm13.bullet.mail.ukl.yahoo.com with NNFMP; 23 Feb 2011 00:46:55 -0000 Received: from [127.0.0.1] by omp1029.mail.ukl.yahoo.com with NNFMP; 23 Feb 2011 00:46:55 -0000 X-Yahoo-Newman-Id: 309374.57134.bm@omp1029.mail.ukl.yahoo.com Received: (qmail 93822 invoked from network); 23 Feb 2011 00:46:55 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btopenworld.com; h=DKIM-Signature:Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=hmdDW+ErDehaG51JJwMyq+Zfml+y120ORBgMqEefXazs2UMlVZmI3G+96Pv0k8JOasGF+K6+xeczT5AhvkB18Siu2zBtJpN0OCDi5rvabHqJfZso+Tx8KAEtVvzi/bbWAI5QQ7SshY/30SxRbrRlZS+jdR9WCR+6YLodGHKk6HM= ; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btopenworld.com; s=s1024; t=1298422015; bh=8UyjyjUOWrSlCmvZ9hgF8Xua97gU65JTxZ3HD9STitE=; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=Da5E3hbT41UR/GyIryD1VHtoJ2oqntz5bPZU9RDx5KLW4wDYlccRJI5NKbmR96PtUGvLdoivAb5838hWnupFPvBnvHtpMknno3KB1QttWUlnGRuATFSste0t+zQ/+urlX5lg0i86yC514zyRUD5Q9fqM/FMzRptIrgFfB4KVXig= Received: from JimPC (james.moritz@86.176.121.152 with login) by smtp818.mail.ukl.yahoo.com with SMTP; 23 Feb 2011 00:46:52 +0000 GMT X-Yahoo-SMTP: Cxhli3eswBD1ozmtAojhjrja86kWx0Qm9tycD5QR1DKWrOLgjJcXkw-- X-YMail-OSG: 1zZDk.wVM1kPTZfIi5cq01YZ3XaKm9SE_rXWoOn6GYfckCg h1FMwqF8YjcOfxQs9CAePdn63mP0d0DmvL2lmG3Tvw8xuX32dfsF5BFi.2.T Lpt7vTO.TRAioKokSDWQSv52t8nv2TxiphkGv5qOR2JT2C1VoxYwOvWUWp7n QEqOgb19s5EBRTwVvlfjNQQ83PtwWlRmuZglGe6CAH8ej2zQ5ToeVh1OmyKK w_KLGYO.awc9GJvjPSwB4MHfCoRGgCKKqj7Gjj0zjH7ChZ7cvjYjBRYU5CVh Qq0NGyCbsFdNyG7eF1.4UcLRsT4w- X-Yahoo-Newman-Property: ymail-3 Message-ID: <546BF6FAE32F4A9EBBBA636F3AE242A0@JimPC> From: "James Moritz" To: References: <004201cbd111$5d4567f0$0401a8c0@xphd97xgq27nyf> <949432225.7185542.1298229766613.JavaMail.fmail@mwmweb068> <4D626713.2010006@iup.uni-heidelberg.de> In-Reply-To: <4D626713.2010006@iup.uni-heidelberg.de> Date: Wed, 23 Feb 2011 00:47:06 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18263 DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,UNPARSEABLE_RELAY=0.001 Subject: Re: LF: toroid xformer Content-Type: text/plain; format=flowed; charset="utf-8"; reply-type=response X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=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-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d273.1 ; domain : btopenworld.com DKIM : pass x-aol-sid: 3039ac1d41184d64595340a7 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Content-Transfer-Encoding: quoted-printable Dear Stefan, LF Group, No, I am not currently transmitting on 9kHz - the amplifier was built= some=20 years ago to do some component tests in the VLF/LF/MF range and covers= from=20 several kHz to about 2MHz. It was built using parts of an old public= address=20 audio amplifier I found in a skip, and the TO3 audio mosfets came from= my=20 very first LF TX, which was based on a Maplin Hi Fi amplifier module,= and=20 was used on 73kHz and 136kHz. I later used the amplifier for my first= 500kHz=20 transmissions, so if it does get used for 9kHz one day, those mosfets= will=20 certainly have travelled widely in the frequency spectrum ;-) Cheers, Jim Moritz 73 de M0BMU ----- Original Message -----=20 From: "Stefan Sch=C3=A4fer" To: Sent: Monday, February 21, 2011 1:22 PM Subject: Re: LF: toroid xformer > Hello Jim, LF, >> > Does it mean you are transmitting on VLF as well? :-) Would be inter= esting=20 > to know some details, if so :-)