John,
Looks like its a just a plain old cw rig .. don't have the full story,
but from the bits of the pdf that translates , looks like its dds
controlled with a pic , master clock running at 67 MHZ , dds out to 17
MHz then divided down to 136 ..
A real steam hammer / nut cracker set at round £800 .. .. and there is a
50 watt version as well .....
http://wsplc.com/pdf/TX-2200A.pdf
G ..
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From: "John RABSON" <[email protected]>
Sent: Monday, December 14, 2009 5:51 PM
To: <[email protected]>
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
transmitter for 136 kHz, depending upon what any individual needs. Being
able to generate 1 kW is not always necessary. One thing that struck me
about this unit is that the power level can be varied over a considerable
range. When setting up an antenna and its connection to the feed line, it
is very useful to start with low power (hence low voltage) so as not to
stress the various components unnecessarily.
One thing I like about this unit is that it can be used for ordinary
hand-sent CW. Presumably QRSS would not be a problem. Also, can this rig
be used for some of the more sophisticated modes? I do not think I have a
complete set of the e-mails of this thread. Please will someone enlighten
me. Thanks.
73
John Rabson
F5VLF
58800 Cervon
France
JN17vg
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