Mark, there are several. Here is one:
http://www.qsl.net/ae4jy/pathsim.htm
Jim W7ANF
Quoting Mark Erbaugh <mark@microenh.com>:
> As I continue my work on my own custom Pegasus control software, I have
> now
> incorporated the ability to play .WAV files through the aux input. This
> will
> allow me to use the computer as a digital voice keyer.
>
> However, I think that I can take advantage of some sound processing
> software
> on the computer to customize the .WAV file to give it more punch. Other
> than
> doing some dynamic limiting to increase the average power, are there
> things
> that can be done to increase the chances of standing out or at least
> being
> heard in a pileup? Is there a model of HF propagation that can be used
> to
> experiment with the effects of various enahancements?
>
> 73,
> Mark
|