Return-Path: Received: from mtain-mi01.r1000.mx.aol.com (mtain-mi01.r1000.mail.aol.com [172.21.131.154]) by air-mc05.mail.aol.com (v129.4) with ESMTP id MAILINMC054-a96a4c4724fd346; Wed, 21 Jul 2010 12:49:01 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mi01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 63BB438000207; Wed, 21 Jul 2010 12:48:59 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ObcRn-0006d9-W4 for rs_out_1@blacksheep.org; Wed, 21 Jul 2010 17:47:07 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ObcRn-0006d0-JP for rsgb_lf_group@blacksheep.org; Wed, 21 Jul 2010 17:47:07 +0100 Received: from col0-omc1-s16.col0.hotmail.com ([65.55.34.26]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1ObcRm-00017h-Mh for rsgb_lf_group@blacksheep.org; Wed, 21 Jul 2010 17:47:07 +0100 Received: from COL122-W37 ([65.55.34.7]) by col0-omc1-s16.col0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Wed, 21 Jul 2010 09:46:56 -0700 Message-ID: X-Originating-IP: [81.200.63.88] From: Lubos OK2BVG To: _RSGB_LF Date: Wed, 21 Jul 2010 18:46:56 +0200 Importance: Normal In-Reply-To: <0ac001cb28c3$a7b4d150$7900a8c0@athlon1200> References: <0ac001cb28c3$a7b4d150$7900a8c0@athlon1200> MIME-Version: 1.0 X-OriginalArrivalTime: 21 Jul 2010 16:46:56.0745 (UTC) FILETIME=[54A56D90:01CB28F4] X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Content-Type: multipart/alternative; boundary="_dc2db784-d725-4a50-b6d7-7e02a31a1d48_" Subject: RE: LF: audio amps for LF driver service X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=FORGED_HOTMAIL_RCVD,HTML_20_30, HTML_MESSAGE 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: 3039400cdec94c4724fb075b X-AOL-IP: 193.82.116.20 X-AOL-SPF: domain : blacksheep.org SPF : temperror X-Mailer: Unknown (No Version) --_dc2db784-d725-4a50-b6d7-7e02a31a1d48_ Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable Hello Dave!I use a stereo amp TDA7057AQ in my 137kHz driver. 12V ..... pow= er 7W15V ..... power 12W It is good up to 300kHz.=20 Bob, OK2BVG, (beacon OK0EMW) **************************=20 > 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 >=20 > I've seen comments here from time to time about various audio power=20 > amps being used for low power tx purposes - any suggestions as to=20 > whats a useful one for 136 up to 500 kHz at the 5 watt level or=20 > thereabouts? >=20 > 73 > Dave, ZL3FJ >=20 >=20 =20 _________________________________________________________________ Hotmail: D=F9v=ECryhodn=E1 e-mailov=E1 slu=BEba s antispamovou technologi= =ED Microsoft https://signup.live.com/signup.aspx?id=3D60969=3D --_dc2db784-d725-4a50-b6d7-7e02a31a1d48_ Content-Type: text/html; charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable Hello Dave!

I use a stereo amp TDA7057AQ in my 137kHz driver.

12V ..... power 7W

15V ..... power 12W

It is good up to 300kHz.

Bob, OK2BV= G, (beacon OK0EMW)

**************************&nbs= p;

> From: tractorb@ihug.co.nz
> To: rsgb_lf_group@blacksh= eep.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 technologi=ED Microsoft Zaregistrovat =3D --_dc2db784-d725-4a50-b6d7-7e02a31a1d48_--