Message-ID: <0FBFB0F2D03145CFA5444890FC1156D7@AGB>
From: "Graham" <g8fzk@g8fzk.fsnet.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: <57a24ca70912090730q682ffc79g7ffa9582e0cc40fa@mail.gmail.com> <20091210100700.32DEC31E703@smtps01.kuleuven.be> <1260444821.6353.65.camel@vaio3rd> <BLU146-DS602CCD96606FA9CA55EE0CF8D0@phx.gbl> <1260449921.6353.77.camel@vaio3rd> <200912141851290399.0E3514C6@smtp2.numeo.fr>
In-Reply-To: <200912141851290399.0E3514C6@smtp2.numeo.fr>
Date: Mon, 14 Dec 2009 19:50:25 -0000
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Subject: Re: LF: Re: TX-2200A
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John,

Looks like its a  just a  plain old  cw rig ..  don't have the  full=
 story,=20
but  from the  bits of the  pdf that translates , looks like its  dds=
=20
controlled with a  pic , master  clock running at  67 MHZ , dds  out=
 to  17=20
MHz then divided down to  136 ..

A real steam hammer / nut cracker set at round  =A3800 .. .. and there=
  is a=20
50  watt version as well  .....

http://wsplc.com/pdf/TX-2200A.pdf

G ..

--------------------------------------------------
From: "John RABSON" <john.rabson@numeo.fr>
Sent: Monday, December 14, 2009 5:51 PM
To: <rsgb_lf_group@blacksheep.org>
Subject: LF: Re: TX-2200A

>
> May I add a somewhat late comment about this product, please?
>
> It seems to me that there are several different requirements for a=
=20
> transmitter for 136 kHz, depending upon what any individual needs.=
  Being=20
> able to generate 1 kW is not always necessary.  One thing that struc=
k me=20
> about this unit is that the power level can be varied over a conside=
rable=20
> range.  When setting up an antenna and its connection to the feed li=
ne, it=20
> is very useful to start with low power (hence low voltage) so as not=
 to=20
> stress the various components unnecessarily.
>
> One thing I like about this unit is that it can be used for ordinary=
=20
> hand-sent CW.  Presumably QRSS would not be a problem.  Also, can th=
is rig=20
> be used for some of the more sophisticated modes?  I do not think I=
 have a=20
> complete set of the e-mails of this thread.  Please will someone enl=
ighten=20
> me.  Thanks.
>
> 73
> John Rabson
> F5VLF
> 58800 Cervon
> France
> JN17vg
>
>
>
>
>
>=20