Return-Path: Received: from mtain-dg02.r1000.mx.aol.com (mtain-dg02.r1000.mx.aol.com [172.29.65.10]) by air-dc07.mail.aol.com (v129.4) with ESMTP id MAILINDC073-86534c0296502d0; Sun, 30 May 2010 12:46:08 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dg02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4AF323800008C; Sun, 30 May 2010 12:46:02 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OIlbj-0005bn-KK for rs_out_1@blacksheep.org; Sun, 30 May 2010 17:43:27 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OIlbj-0005be-9Y for rsgb_lf_group@blacksheep.org; Sun, 30 May 2010 17:43:27 +0100 Received: from mail.hurontel.on.ca ([216.46.129.11]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OIlbh-00017A-Ce for rsgb_lf_group@blacksheep.org; Sun, 30 May 2010 17:43:27 +0100 Received: from [192.168.1.100] (pppoe.dyn-216.46.157.81.hurontel.on.ca [216.46.157.81]) by mail.hurontel.on.ca (Postfix) with ESMTP id 4BC517E for ; Sun, 30 May 2010 12:43:21 -0400 (EDT) Mime-Version: 1.0 (Apple Message framework v1078) From: John Bruce McCreath In-Reply-To: <4C02783D.9020502@gmx.com> Date: Sun, 30 May 2010 12:43:20 -0400 Message-Id: References: <20100530.082855.1608.1.riese-k3djc@juno.com> <4C02783D.9020502@gmx.com> To: rsgb_lf_group@blacksheep.org X-Mailer: Apple Mail (2.1078) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Content-Type: text/plain; charset=us-ascii Subject: Re: LF: 8.97kc - TV transformer info needed Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none 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: 3039ac1d410a4c02964a68df X-AOL-IP: 193.82.116.20 Hi Mike, LFers, I grabbed one of my many MOTs and ran some tests with the primary connect= ed to a signal generator's 600 ohm output and the secondary connected to a VTVM. The measured L of the prima= ry is .047 H and the secondary L is 16 H. The turns ratio (120 Volt Primary) is 1:18 give or take a bit. With the signal generator set at 10 volts RMS, the secondary voltage was= measured at 1 kHz. steps as below: Freq. in kHz. Sec. voltage 1 120 2 150 3 190 4 250 5 210 6 160 7 140 8 110 9 85 10 60 The results are poor, just as you found Mike, so it looks like we can rule= out using MOTs for Dreamers Band. It's about what one might expect from a transformer designed for 60 Hz. op= eration. 73, J.B., VE3EAR LowFER Beacon "EAR" 188.830 kHz. QRSS30