Re: LF: Re: QRSS OP WSPR

[Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>]

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