Envelope-to: dave@picks.force9.co.uk Delivery-date: Tue, 04 Oct 2005 15:57:54 +0100 Received: by pih-mxcore17.plus.net with spam-scanned (PlusNet MXCore v2.00) id 1EMoEr-0006d8-6D for dave@picks.force9.co.uk; Tue, 04 Oct 2005 15:57:54 +0100 Received: from post.thorcom.com ([193.82.116.20]) by pih-mxcore17.plus.net with esmtp (PlusNet MXCore v2.00) id 1EMoEr-0006ck-0o for dave@picks.force9.co.uk; Tue, 04 Oct 2005 15:57:53 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1EMoDL-0006jY-VU for rs_out_1@blacksheep.org; Tue, 04 Oct 2005 15:56:19 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1EMoDL-0006jP-G0 for rsgb_lf_group@blacksheep.org; Tue, 04 Oct 2005 15:56:19 +0100 Received: from mailout08.sul.t-online.com ([194.25.134.20]) by relay1.thorcom.net with esmtp (Exim 4.51) id 1EMooC-0000tt-6L for rsgb_lf_group@blacksheep.org; Tue, 04 Oct 2005 16:34:29 +0100 Received: from fwd31.aul.t-online.de by mailout08.sul.t-online.com with smtp id 1EMoDD-00052P-03; Tue, 04 Oct 2005 16:56:11 +0200 Received: from dl4eau (XNxp1sZrZeT2pg11D8D8jCBTxNWGep-xfFI+OEEHS6RzAL6gwyWw6p@[217.245.120.28]) by fwd31.sul.t-online.de with smtp id 1EMoD0-0RgRHM0; Tue, 4 Oct 2005 16:55:58 +0200 From: "Thomas Eckart" To: rsgb_lf_group@blacksheep.org Date: Tue, 4 Oct 2005 16:55:56 +0200 Message-ID: MIME-Version: 1.0 X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-ID: XNxp1sZrZeT2pg11D8D8jCBTxNWGep-xfFI+OEEHS6RzAL6gwyWw6p X-TOI-MSGID: a6a84342-59a1-4a13-9aff-84d6c1b12925 Subject: LF: LF linear preedrive Mods for TDA 2030 for OM2TW by DL4EAU Content-Type: text/html; charset=windows-1252 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-PN-SpamFiltered: by PlusNet MXCore (v2.00) Content-transfer-encoding: 8bit

Hi LF's,
Uwe, dj8wx, asked me for a PA with TDA2030.
I built up the original OM2TW PA and had some problems!
After my mods, ( in red circles) it still running very fine!
Output transformer is a ring N30 AL4100nH 20mm x 10mm x 7,6mm
rik 20 by http://www.reichelt.de 1,15 Euro or any else.
PA datas:
13,8V / 1,5A abt. 6W ------ linear abt.4,5W !! @136Khz
73' Tom DL4EAU

http://www.qsl.net/dl4eau/TDA2030mod.pdf