Return-Path: Received: (qmail 19511 invoked from network); 16 Aug 2002 08:01:18 -0000 Received: from marstons.services.quay.plus.net (212.159.14.223) by mailstore with SMTP; 16 Aug 2002 08:01:18 -0000 Received: (qmail 18447 invoked by uid 10001); 16 Aug 2002 08:06:25 -0000 Received: from post.thorcom.com (193.82.116.70) by marstons.services.quay.plus.net with SMTP; 16 Aug 2002 08:06:25 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 17fdkU-0001GS-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 16 Aug 2002 10:50:30 +0100 Received: from protactinium.btinternet.com ([194.73.73.176]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 17fdkT-0001GN-00 for rsgb_lf_group@blacksheep.org; Fri, 16 Aug 2002 10:50:30 +0100 Received: from host213-122-147-50.in-addr.btopenworld.com ([213.122.147.50] helo=kevin) by protactinium.btinternet.com with smtp (Exim 3.22 #8) id 17fbzx-0004ie-00 for rsgb_lf_group@blacksheep.org; Fri, 16 Aug 2002 08:58:21 +0100 Message-ID: <001f01c244fa$928b2320$c743063e@kevin> From: "Kevin Ravenhill" To: rsgb_lf_group@blacksheep.org References: <000101c240bb$f5237980$2c0e073e@main> <012a01c24224$5e5cef80$9c2cfd3e@default> <000501c244f0$cf36a560$2e734ac3@pcuser> Subject: LF: Re: Re: Low Energy Light Bulbs Date: Fri, 16 Aug 2002 08:56:41 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: > It seemed to me that the wiring between the transformer and the > lightfittings would radiate horribly. The length of the cable between > transformer > and lamps would depend on the building and who wired them up ! These low voltage lighting "transformers" do indeed radiate truly horrendous amounts of hash right across the LF/MF range. There used to be some in our kitchen but they very quickly got removed after I started LF listening. Even LW/MW broadcast reception suffered noticeably, although the lead lengths on the low voltage side of this installation were no more than about 1.5 - 2m. On the other hand, the GE low-energy lamp in my lab is almost silent on 136kHz - which was something of a pleasant surprise. 73, Kevin G1HDQ