GM/GA all,
1. Alberto/I2PHD and others have asked whether details of the JT9
protocol are described somewhere. At present the only full description
is the one implicitly contained in the source code, which is openly
available at http://developer.berlios.de/projects/wsjt/ . In due course
I will provide a summary document describing the source encoding,
error-control coding, interleaving and bit-ordering scheme, and
modulation details. (At this point it's possible that a few of these
things could still change, depending on user feedback.)
2. Roger/G3XBM and others asked whether a WSPRnet-like database might be
made available. Yes, this could be useful, and in principle WSPRnet
itself could accept reception reports from WSJT-X. I will give some
thought to adding such a feature, and I'll consider having WSJT-X
support standard WSPR-format messages such as "WA1ABC FN42 37". I should
mention, however, that the principal intent of JT9 and WSJT-X is to
enable 2-way QSOs at MF and LF, with very narrow bandwidths and very
weak signals. In the longer term, I do not wish that our MF/LF
frequencies will be used mostly for beacon-like transmissions.
3. WSJT-X will continue to evolve in coming weeks. The JT9 decoder is
not yet fully optimized, and other enhancements are in the works, as
well. Surely there will be bugs in the early program releases: bug
reports and requests for new features will be most welcome!
-- 73, Joe, K1JT
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