Hi Bill,
Thanks for responding. I think the problem you mention was fixed around
revision 5788; if you still see an issue please let me know.
-- Joe, K1JT
On 8/21/2015 10:40 PM, ND0B wrote:
> Joe,
>
> I think there is an issue with the JT9 auto sequencer as it has a
> tendency to change the DX Call and messages if more than one decode is
> received. I have on occasion seen some messages jumped but as I plan to
> look at the auto sequencer in detail did not document the situation
> closely.
>
> Great news on JTMSK, I am looking forward to trying it.
>
> 73 de Bill ND0B
>
>
> -----Original Message----- From: Joe Taylor
> Sent: Friday, August 21, 2015 8:19 PM
> To: Bill Ockert - ND0B ; WSJT software development
> Subject: Auto-Sequencing with fast JT9 modes
>
> Hi all,
>
> This message is especially for Bill/ND0B, because he designed the
> auto-sequencing option in WSJT10. But it's also for anyone who has been
> exercising the fast JT9 modes.
>
> Are you happy with the way the current auto-sequencer takes one through
> a QSO? Any suggestions for making it better?
>
> The fast JT9 modes are designed for meteor and ionospheric scatter on 6
> meters. They also work well on 10 m, and perhaps on 4 m. But they're
> not very useful at 144 MHz and above, because they require minimum ping
> durations around 400 ms.
>
> in the last ten days I've been working on a new mode tentatively called
> JTMSK. It uses 2-tone "minimum shift keying" (MSK) at 2000 baud, and
> it's aimed at situations where signal enhancements (e.g., from weak,
> underdense meteor pings) are too short to be decodable in JT9H. There's
> no JTMSK decoder in WSJT-X, as yet, but a stand-alone command-line
> decoder is now working well on recorded pings copied over the air.
> Sensitivity is about the same as FSK441, and pings can be as short as
> 100 ms. JTMSK has strong forward error correction, so you get perfect
> decodes with no on-screen garbage.
>
> I'm busy now with some necessary optimizations of the decoder. If all
> goes well with that effort, JTMSK might be available for testing by
> others in a week or so.
>
> -- 73, Joe, K1JT
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