Message-ID: <0fdf01cb2a4b$af738b50$7900a8c0@athlon1200>
From: "Dave Brown" <tractorb@ihug.co.nz>
To: <rsgb_lf_group@blacksheep.org>
References: <0ac001cb28c3$a7b4d150$7900a8c0@athlon1200> <COL122-W37821F09CF781FD86CC77CD3A10@phx.gbl>
Date: Fri, 23 Jul 2010 21:44:45 +1200
MIME-Version: 1.0
Subject: Re: LF: audio amps for LF driver service
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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=20
that performs up to that frequency is likely to be a rare beast. I=20
will probably have to make up something from discrete components- no=
=20
great task but a packaged small amp would be more convenient.
73
 Dave, ZL3FJ

----- Original Message -----=20
From: "Lubos OK2BVG" <bvgbob@hotmail.com>
To: "_RSGB_LF" <rsgb_lf_group@blacksheep.org>
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
>
>

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