Return-Path: <majordom@post.thorcom.com> Received: (qmail 1733 invoked from network); 5 Dec 2000 11:42:35 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 5 Dec 2000 11:42:35 -0000 Received: (qmail 25393 invoked from network); 5 Dec 2000 11:37:39 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 5 Dec 2000 11:37:39 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 143GHa-0006gS-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 05 Dec 2000 11:29:14 +0000 Received: from ns1.swh.sk ([192.108.125.33]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 143GHY-0006gN-00 for rsgb_lf_group@blacksheep.org; Tue, 05 Dec 2000 11:29:12 +0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from hermes.swh.sk (hermes [139.24.136.129]) by ns1.swh.sk (8.9.1/8.9.1) with ESMTP id MAA16256 for <rsgb_lf_group@blacksheep.org>; Tue, 5 Dec 2000 12:29:01 +0100 Received: from btss101a.swh.sk (btss.swh.sk [139.24.136.15]) by hermes.swh.sk (8.9.3/8.9.2) with ESMTP id MAA13294 for <rsgb_lf_group@blacksheep.org>; Tue, 5 Dec 2000 12:28:58 +0100 (MET) Received: by btss.swh.sk with Internet Mail Service (5.5.2448.0) id <WQMSSFC8>; Tue, 5 Dec 2000 12:28:55 +0100 Message-ID: <29BDD4F529FCD311B631009027357C4E01AD871D@btss103a.swh.sk> From: "Gasparik Richard" <Richard.Gasparik@sbs.sk> To: rsgb_lf_group@blacksheep.org Subject: LF: RE: Looking for 2-3 Watt Linear PA for LF Date: Tue, 5 Dec 2000 12:28:55 +0100 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2448.0) Content-Type: text/plain; charset=iso-8859-1; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: <majordom@post.thorcom.com> Hi Geri... Look on my web site http://www.qsl.net/om2tw in Technical project page (in main menu on the left side). Best regards... 73 de Rich OM2TW > -----Original Message----- > From: Holger 'Geri' Kinzel, DK8KW [SMTP:DK8KW@compuserve.com] > Sent: 5. december 2000 11:41 > To: INTERNET:rsgb_lf_group@blacksheep.org > Subject: LF: Looking for 2-3 Watt Linear PA for LF > > Dear LF enthusiast, > > nice to see that the reflector is back on again! > > We had a nice Dutch/German LF meeting during the Dortmund rally last > Saturday, consisting of Wil, PA0BWL, Wolf, DL4YHF (the operator of DF0WD), > Ruediger, DK6JL, Hellmuth, DF7VX (the VHF/UHF manager of the DARC ...) and > myself. > > On the fleemarket I got hold of an SSB exciter made by Hagenuk, called > EX-1001. This exciter delivers CW/LSB/USB from 0.1 to 30 MHz in 100 Hz > steps, so it is the ideal unit for BPSK/PSK31/HELL/FAX and similar > experiments on LF that require linear modulation. > > The unit is supposed to deliver about 100 mW (7 Volts peak-to-peak@50 > Ohm) > from 400 kHz onwards, on 136 kHz unfortunately it is only 1 Volt > peak-to-peak@50 Ohm, representing about 10 mW, not sufficient to drive the > G0MRF-PA. > > Does anyone of you have a proven scheme of a small linear PA available, > that delivers about 2 or 3 Watts from 10 mW, preferably from 18 Volts > (which is the voltage used by the exciter)? I am sure a small audio > amplifier would do ... > > Thank you very much, best 73 > > Geri, DK8KW (W1KW)