Content-Type: text/plain; charset=ISO-8859-2; format=flowed Return-Path: Content-Transfer-Encoding: 8bit Received: (qmail 13879 invoked from network); 24 Jun 1999 09:20:57 +0100 Received: from magnus.plus.net.uk (HELO magnus.force9.net) (195.166.128.27) by guiness.force9.net with SMTP; 24 Jun 1999 09:20:57 +0100 Received: (qmail 16094 invoked from network); 24 Jun 1999 08:20:50 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by magnus.plus.net.uk with SMTP; 24 Jun 1999 08:20:50 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 10x4Sn-0004Ci-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 24 Jun 1999 09:02:25 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from ns.cro.cz ([193.179.196.2] ident=qmailr) by post.thorcom.com with smtp (Exim 3.02 #1) id 10x4Sm-0004Cd-00 for rsgb_lf_group@blacksheep.org; Thu, 24 Jun 1999 09:02:24 +0100 Received: (qmail 7746 invoked from network); 24 Jun 1999 08:02:21 -0000 Received: from fw.cro.cz (HELO ns-int.cro.cz) (193.179.197.2) by ns.cro.cz with SMTP; 24 Jun 1999 08:02:21 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from radiohk.hk.cro.cz (ns.hk.cro.cz [172.27.1.2]) by ns-int.cro.cz (8.8.5/8.8.5) with ESMTP id KAA09415 for ; Thu, 24 Jun 1999 10:02:19 +0200 (MET DST) Received: from pc033hk.hk.cro.cz ([172.27.1.33]) by radiohk.hk.cro.cz (8.9.1/8.9.1) with SMTP id KAA00049 for ; Thu, 24 Jun 1999 10:01:59 +0200 (MET DST) Received: by pc033hk.hk.cro.cz with Microsoft Mail id <01BEBE28.982E6820@pc033hk.hk.cro.cz>; Thu, 24 Jun 1999 10:01:57 +-200 Message-ID: <01BEBE28.982E6820@pc033hk.hk.cro.cz> From: "Petr Maly" To: rsgb_lf_group@blacksheep.org Subject: LF: RE: coil wind prob, evolution-1 Date: Thu, 24 Jun 1999 10:01:56 +-200 MIME-Version: 1.0 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org Sender: Hi all. I wonder how the LF coil should look like because I experienced following problem. I made "loading coil" on diameter 80mm, length of coil about 100mm. Turn by turn with litz wire. This litz has got outer diameter about 1.2mm. There are about 7 layers or so. There are two coils in series, one tapped and the second similar as a vario. When I tune to DCF39 on 139 kHz I experince two maxima! No matter whether I tune switching taps or rotating with inner coil of the vario. The maxima are not far from each other and they are of about the same heigth. I suspect that the coils have a very high capacity themselves so ones I tune antenna capacity and the other time capacity of the coil. I wonder how the loading coil will behave with TX. If this is true there should be only one maximum measuring antenna current. Anyway I take this as a proof that coils doesn't do their job properly. Does anybody have a different explanation? 73 Petr, OK1FIG ---------- Od: Soegiono, Gamal[SMTP:soegiono@nmex01nt.hsd.utc.com] Odesláno: 24. cervna 1999 10:08 Komu: rsgb_lf_group@blacksheep.org Predmet: LF: coil wind prob, evolution-1 Hello all recently I asked some coil winding questions. Now I am able to answer them to some extend by myself: ...