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Re: LF: Re: QRSS OP WSPR

from [Stefan Schäfer] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: Re: QRSS OP WSPR
From: Stefan Schäfer <[email protected]>
Date: Fri, 27 Sep 2013 21:29:13 +0200
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Am 27.09.2013 20:51, schrieb Clemens Paul:

[...]
If you are seriously interested in generating a key click free CW 
signal,there's an
article about that
in QST 5/97 and 6/97 dealing with class E amps which would also apply to class 
D amps.

73
Clemens
DL4RAJ

Yes.
Or that one: http://www.classeradio.com/classh.htm
I even built something similar some months ago. It is possible to adjust the power from 0...> 1 kW with a small potentiometer. Somehow fascinating. It was intended to send slow hell on the LF PA, not key click free CW. The project is maybe 90% finished but then other projects got priority. Image: https://dl.dropboxusercontent.com/u/19882028/LF/20130927_211117.jpg You can read the names of some ICs :-) 

BTW when will your MF PA be finished?

73, Stefan/DK7FC
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