Very interested to be part of what the software modifier-author calls an 'internal assessment' of the latest JTDX candidate release, which doesn't seem to be publicly available at the moment.
WSPR is the mode receiving attention this time. A large number of WSPR test files with signals down to an astonishing minus 38dB have been made available for testing. The current edition of WSJT-X, on which JTDX is based, has a lower limit of -34dB.
It will be interesting to see how this works out under real world conditions. More particularly, I hope it won't lead to a larger number of false decodes.
Initial testing shows some improvement over the general release JTDX. There were fairly regular decodes down to -31dB at 10MHz last evening, perhaps more frequently than I've seen with WSJT-X so far. But there are no decodes down to -34dB and below yet, although those are always scarce, anyway.
We'll see what turns up during listening tests through the week.
[UPDATE: yet another release candidate version has been released just a couple of days later. This does appear to be returning more signals around the -29 to -30dB mark, but as of yet, nothing that goes beyond -31dB. Time will tell if there is any significant improvement in sensitivity over earlier versions and WSJT-X]
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