Hi Bill and all,
> Is the JT65A+JT9 split at a particular DF a technical requirement for
> the decoder or is it there to marshal band usage and nudge operators to
> separate sub-bands for each mode?
Two good reasons for having a "blue line":
1. As you say, to encourage operators to keep the two mode in slightly
different slices o0f the band.
2. To prevent a big slow-down of the JT9 decoder as it tries (without
success, of course) to decode all the JT65 signals.
> The reason I ask is that my current changes could easily accommodate
> automatic mode setting in dual mode depending on whether the cursor is
> left or right of the blue line.
>
> The net gains of auto mode switching would be more space on the main
> window as the mode button could be removed and simplify dual mode
> operation a little. OTOH if the split is not for technical decoding
> reasons then the button has a purpose if the split divider were to be
> discarded.
>
> Also as things are at the moment the RX cursor indication of mode is
> fairly meaningless as far as I can see.
I'm not sure that I really understand what you're getting at. The
program is already "dual mode" in receive; the setting of "Tx Mode"
simply tells the program which mode to decode first. Moreover, the
program already does automatic switching of the Tx mode when you
double-click on a signal or a line of decoded text. The shape of the
waterfall cursors reflects the setting of Tx mode.
I don't see that space on the main screen is severely cramped at
present, and I don't see just how dual-mode operation would be made
simpler without the Tx Mode button. But maybe I haven't grasped what
you have in mind.
-- Joe
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