Hi Stefan.
I am monitoring 136KHz – JT9-5.
73, HNY
Spiros/SV8CS
Sent: Friday, December 28, 2018 12:04
Subject: Re: LF: SlowJT9 update (v0.9.12.5)
LF,
I am now TXing JT9-5 on 137.38 kHz. Is there someone who yould give
me a report?It is good to see that the program did not crash yet on
my PC. This is an improvement. Even the transmisions seem to work now, so far.
Unfortunately the program does still not support TX frequencies above
843 Hz in the JT9-5 mode. So i need to change the (not existing 'dial')
frequency by adding another 600 Hz to SpecLabs upconverter. Actually i need
12380 Hz to steer my LF hardware to transmit on the desired frequency. It would
be nice if a next version could support all frequencies up to 24 kHz, so the
software becomes more flexible for OMs using their homemade upconverters, rather
than a HF TRX with their microphone inputs and SSB frequency ranges. One more
feedback: It would be nice if the spectrogram would scroll slower for the slower
modes, and just displays time markers in one TX/RX interval, i.e. here: 5
minutes. 73, Stefan Am 28.12.2018 12:15, schrieb
DK7FC:
Hello Rik,
LF,
Congrats to the latest version! I'm going to install it now and
hope it will work well here too.
What about the JT9-10 mode? It could be
very helpful on 2200m these days.
My VLF TX was running for 3 days
without a single interruption. Now i stopped it and do QSY to 137 kHz. It
means that i can receive again there and hope to see some messages into the
monitor field. Also i plan to transmit, if all works well.
Looking forward
to a QSO.
73, Stefan
Am 26.12.2018 21:11, schrieb Rik
Strobbe:
Dear all,
I finally found the time to implement JT9-5 and just uploaded v0.9.12.5.
Be ware that this is a ZIP file that only
contains the SlowJT9.exe. In order to use it you need to install version
0.9.12.4 (if not already done) and replace the v0.9.14.4 SlowJT9.exe by the
one in the ZIP file.
The JT9-5 mode was just briefly tested but
seems to decode fine at -33dB.
All reports on JT9-5 tests are welcome, as
well as any bug report, remark or suggestion.
73, Rik ON7YD - OR7T
Dear all,
Beta-release v0.9.12.4 of SlowJT9 has been uploaded, see http://www.472khz.org/SlowJT9/.
Changes:
- A bug fixed that sometimes caused the application to crash at the end
of a transmission.
- Ability to select double or quadruple tone tone spacing
(Settings->Mode)
- Ability to display the own transmission in the RX frequency window
(Settings->Mode).
I got very few bug reports from the previous version (0.9.12.3), so
either SlowJT9 is running quit stable or people are getting tired of sending
me bug reports ;-)
Bug reports, remarks and suggestions are still welcome.
73, Rik ON7YD - OR7T
Dear all,
I just uploaded a new beta-release of SlowJT9 (v0.9.12.3).
The reporting to debug.txt is been extended (in particular during
TX).
I also fixed a array bound violation that caused crashes once in a
while.
JT9-5 and JT9-10 modes are temporarily disabled, my first goal is to have
a stable version before tackling new features.
Be aware that
due to the baudrate changes there is NO BACKWARD COMPATIBILITY for JT9-2 and
JT9-5 to version prior to 0.9.10.
In other words: JT9-2 and JT9-5 send with
v0.9.11 cannot be decoded with versions v0.9.00 - v0.9.03 and vice
versa.
The JT9-1 mode however is still the same and can be sent / received with
all versions (and is WSJT-X compatible).
The purpose of this version is to determine the stability of the
application.
Therefore all test reports, remarks, suggestions and opinions are
most welcome.
I want to thank everybody who gave feedback, suggestions and bug reports
over the past weeks, this was very much appreciated! In particular Markus,
DF6NM, for his patience in explaining me how to implement windowed sinc
interpollation for the resampling.
Whoever is interested can download the SlowJT9 version 0.9.12.3
installation file at http://472khz.org/SlowJT9/.
For now only a Windows version of SlowJT9 is available. But as the used
IDE has cross platform facilities it should be possible to support other
operating systems as well in the future.
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