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QMX+ "Tune SWR" for 1 second?

 

A puzzle resolved?
?
I tried various bands and modes, but I failed to enable my QMX+ Tune SWR function for more than 1 second,
far less than this old duffer could work an "antenna tuner" in his best days.
?
Hans, in a You Tube video, shows how that function works in the QMX, continuously keying tx and showing the resulting SWR,
for up to 1 minute; sufficient time for this Ol Geezer to "tune er up".
?
Being slow in the head, and getting no better, after a couple of days I "discovered" that with my QMX+ connected to a PC, connected to? WSJT, the Tune SWR only keys up
my QMX+ for 1 second and does not time out after 1 minute. When WSJT-X is closed, the function works as advertised... Now, happy old dog.
?
Da Ol' Dog/wa4hei
 

Hi Fred

I expect WSJT-X is querying and setting the radio via CAT commands. I should change that! Consider it added to my list!

73 Hans G0UPL


On Sat, Mar 29, 2025, 14:09 Fred Murray via <fredmurray919=[email protected]> wrote:
A puzzle resolved?
?
I tried various bands and modes, but I failed to enable my QMX+ Tune SWR function for more than 1 second,
far less than this old duffer could work an "antenna tuner" in his best days.
?
Hans, in a You Tube video, shows how that function works in the QMX, continuously keying tx and showing the resulting SWR,
for up to 1 minute; sufficient time for this Ol Geezer to "tune er up".
?
Being slow in the head, and getting no better, after a couple of days I "discovered" that with my QMX+ connected to a PC, connected to? WSJT, the Tune SWR only keys up
my QMX+ for 1 second and does not time out after 1 minute. When WSJT-X is closed, the function works as advertised... Now, happy old dog.
?
Da Ol' Dog/wa4hei
 

Something that may be relevant was that I found that my QMX+ needed to have the Rise Threshold reduced to 60 to start transmitting. I then found that it would only transmit for a few seconds. I found that the lower the Fall Threshold the longer the transmission and ended up with a Rise of 60 and Fall of 30.
?
Incidentally the current incarnation of WSJT-X will read and report the power output and SWR if these are available in the CAT command set.? It WBN if these (and setting the mode if it isn't already there) were available.
?
Chris, G5CTH
 

This may have been the audio out processing, it was set to default, setting it to off seems to allow normal operation with no need to play games with the thresholds.
?

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