Hi Rex,
Thanks for your suggestions.
VK7MO wrote:
> Prior to the next candidate release I think it would be worth considering:
>
> a. The introduction of filtering to improve QRA with spreading
>
> b. Some work to see if you can resolve the reasons for ftol not working
> properly and whether if you can fix that there would be useful gains.
These things will certainly be done, although not necessarily in time
for the next alpha release. Ftol and handling large Doppler spreads are
inter-related.
Only submode A of QRA64 has been optimized and thoroughly tested, as
yet. As far as I'm aware, Ftol works as expected in QRA64A.
> c. A test version with wider Costas array tone spacing to establish if the
> gaining of sync can be improved.
One possibility will be to make the sync-tone spacings wider *only* for
submodes B-E. Doing it this way would have the advantage of not
breaking QRA64A as it is now used.
> d. Increasing the file duration to avoid missing part of the third Costas
> array on EME -- unless you have already done this.
This has been done.
> While I suspect the above proposals relate mainly to the use of QRA at the
> upper microwave frequencies for both EME and tropo they may have
> implications as low as 1296 MHz.
RRR
-- 73, Joe, K1JT
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