Hello Klaus,
On the other hand, WSPR has the advantage of automatic
recording. But that is not an advantage of the mode, it
simply is the lack of a corresponding simple program that
does the same with a QRSS signal.
the automatic recording/reporting ability is clearly an advantage of
WSPR in regard with propagation studies. And I agree that QRSS or DFCW
would serve as well or even better if a similar automatic
recording/reporting would be provided.
But I am afraid that a "waterfall display to ASCII" conversion is not
simple at all ;-)
Nevertheless, WSPR is not very near to the Shannon limit.
I spent nearly all my leisure time of the last year with
the design of a new digital ham radio QSO-mode HD43 that
comes as close as possible to the theoretical limit.
I will send a preprint on request.
I am interested
73, Rik ON7YD - OR7T
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