Return-Path: Received: from mtain-de09.r1000.mx.aol.com (mtain-de09.r1000.mx.aol.com [172.29.64.209]) by air-db09.mail.aol.com (v129.4) with ESMTP id MAILINDB094-869d4c496a9063; Fri, 23 Jul 2010 06:10:24 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-de09.r1000.mx.aol.com (Internet Inbound) with ESMTP id 81D00380000B2; Fri, 23 Jul 2010 06:10:21 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OcFBx-0005ip-5j for rs_out_1@blacksheep.org; Fri, 23 Jul 2010 11:09:21 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OcFBw-0005ig-Km for rsgb_lf_group@blacksheep.org; Fri, 23 Jul 2010 11:09:20 +0100 Received: from mailout-de.gmx.net ([213.165.64.22] helo=mail.gmx.net) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1OcFBv-0005EL-Sz for rsgb_lf_group@blacksheep.org; Fri, 23 Jul 2010 11:09:20 +0100 Received: (qmail invoked by alias); 23 Jul 2010 10:09:13 -0000 Received: from 188-194-84-42-dynip.superkabel.de (EHLO Uwe) [188.194.84.42] by mail.gmx.net (mp006) with SMTP; 23 Jul 2010 12:09:13 +0200 X-Authenticated: #9373712 X-Provags-ID: V01U2FsdGVkX1+eaqBxfOme5rmyh0yWUOB9ynG1Lk2rEVIqzC2Y1r rka5FbsfQ3sDf/ Message-ID: <3DC4EB288CE74FF0B2468CC30E17A1B9@Uwe> From: "Uwe Wensauer" To: References: <0ac001cb28c3$a7b4d150$7900a8c0@athlon1200> <0fdf01cb2a4b$af738b50$7900a8c0@athlon1200> Date: Fri, 23 Jul 2010 12:09:13 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5931 X-Y-GMX-Trusted: 0 X-Spam-Score: 3.4 (+++) X-Spam-Report: autolearn=disabled,FORGED_MUA_OUTLOOK=3.36 Subject: Re: LF: audio amps for LF driver service Content-Type: text/plain; format=flowed; charset="iso-8859-2"; reply-type=response X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.6 required=5.0 tests=FORGED_MUA_OUTLOOK autolearn=no version=2.63 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-aol-global-disposition: G x-aol-sid: 3039ac1d40d14c496a8d0c7d X-AOL-IP: 193.82.116.20 X-AOL-SPF: domain : blacksheep.org SPF : none Content-Transfer-Encoding: quoted-printable Hi, have a look at JUMA TX136/500 This circuit, handling 60 Watts, can easily duplicated.( or bought )= See=20 http://www.nikkemedia.fi/juma/ Uwe, dk1kq ----- Original Message -----=20 From: "Dave Brown" To: Sent: Friday, July 23, 2010 11:44 AM Subject: Re: LF: audio amps for LF driver service > Thanks for the replies - some useful amps noted. I'd like to find=20 > something that could be used up to 500kHz but I guess an audio amp= that=20 > performs up to that frequency is likely to be a rare beast. I will= =20 > probably have to make up something from discrete components- no grea= t task=20 > but a packaged small amp would be more convenient. > 73 > Dave, ZL3FJ > > ----- Original Message -----=20 > From: "Lubos OK2BVG" > To: "_RSGB_LF" > Sent: Thursday, July 22, 2010 4:46 AM > Subject: RE: LF: audio amps for LF driver service > > > > Hello Dave!I use a stereo amp TDA7057AQ in my 137kHz driver. 12V ...= ..=20 > power 7W15V ..... power 12W > It is good up to 300kHz. > Bob, OK2BVG, (beacon OK0EMW) > ************************** > >> From: tractorb@ihug.co.nz >> To: rsgb_lf_group@blacksheep.org >> Date: Wed, 21 Jul 2010 22:58:30 +1200 >> Subject: LF: audio amps for LF driver service >> >> I've seen comments here from time to time about various audio power >> amps being used for low power tx purposes - any suggestions as to >> whats a useful one for 136 up to 500 kHz at the 5 watt level or >> thereabouts? >> >> 73 >> Dave, ZL3FJ >> >> > > _________________________________________________________________ > Hotmail: D=F9v=ECryhodn=E1 e-mailov=E1 slu=BEba s antispamovou techn= ologi=ED Microsoft > https://signup.live.com/signup.aspx?id=3D60969=20