Return-Path: Received: (qmail 17040 invoked from network); 23 May 2001 13:27:25 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 23 May 2001 13:27:25 -0000 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit Received: (qmail 13561 invoked from network); 23 May 2001 13:26:53 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 23 May 2001 13:26:53 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 152YTb-0005wn-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 23 May 2001 14:14:59 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from anchor-post-31.mail.demon.net ([194.217.242.89]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 152YTa-0005wi-00 for rsgb_lf_group@blacksheep.org; Wed, 23 May 2001 14:14:58 +0100 Received: from telemetry.demon.co.uk ([194.222.19.114]) by anchor-post-31.mail.demon.net with smtp (Exim 2.12 #1) id 152YSz-00069I-0V; Wed, 23 May 2001 14:14:22 +0100 Message-ID: Date: Wed, 23 May 2001 13:08:22 +0100 To: "RSGB LF Group" , g4jnt@thersgb.net From: "Tom Boucher" Subject: LF: Big PA MIME-Version: 1.0 X-Mailer: Turnpike Version 3.03a Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Andy 'JNT Could you give me info on the little pot-core you use for your driver transformer in your PA? Material, turns? I used a Farnell 559-570 ferrite sleeve, intended for EMC suppression, no info on material, 16 turns on primary (1.1 mH) and 29 turns quadrifilar on the secondary. The TC-4426 driving it got rather hot so I ac coupled it with a 0.33 mFd which seemed to improve things a little. Thanks, Tom G3OLB