On 24/01/2019 10:29, N1BUG wrote:
I want to inquire one more time about WSPR-15. Is this mode finally
declared forever abandoned or is there still some hope it will find
its way into WSJT-X?
Hi Paul,
there has been some work on a WSPR-LF mode that should perform at least
as well as WSPR-15, on LF bands, using considerably shorter T/R periods.
On the new lower LF bands a decoder can take advantage of the far more
stable propagation than is found on the higher short-wave bands.
Coherence across significant periods of time allows assumptions that
frequency and phase of a signal are essential stable, this opens up
significant techniques for improved sensitivity.
The work so far is a background project which may get more attention
when some other current developments are completed.
73
Bill
G4WJS.
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