Hi Spiros,
Thanks for watching. I'm not sure if this works, maybe you need to
listen on 136.6 kHz if you want to receive me. I cannot transmit on
<=136.843 kHz with this LF coil. Thus i am on 137.380 kHz. So my
signal should appear at 1380 Hz if you are tuned to 136 kHz. But will
slowJT9-5 decode on this frequency? It is on the spectrum display at
least...
73, Stefan
Am 28.12.2018 14:18, schrieb SV8CS-Spiros Chimarios:
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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