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Very often when I do a Single click to change mode it changes band instead.

I was wondering if there’s something I can do to improve the situation. ?Is this a hardware issue or a firmware issue?

Is a common issue?

Sometimes if the knobs are installed with not enough clearance for full down travel you can get double clicks.? If this seems like a possibility, try raising the knobs on the shaft a little.

?

Brien

Thank you Brian I was thinking about that and I will definitely give it a try. Thank you

Purely a firmware thing, I believe. When/if the BASIC comes, I want to customize the UI so that a single click of the left encoder puts the QMX into band select mode and you choose the band by rotating the encoder. And, put the mode change behind a double-click.

?

Another problem, I experience while operating is that I’ll tap the right button to end Message playback, but will get a little bounce and end up swapping the A and B VFO, which is annoying when you don’t notice and sit there wondering why the station calling you just disappeared! In fact, I might go so far as to have the multi VFO features enabled by a menu item so I don’t hit them inadvertently.

I actually removed the knob completely and it did not solve the issue.

so I have confirmed that there is no travel issues due to the ?knob restricting its ?movement.

I don't have this problem on any of my 4 QMX, so I'm pretty sure it's not just firmware.

Some ideas/possible fixes:

1) I would touch up the soldering on that encoder and its connectors to the main board, in case there is a cold solder joint that causes some intermittent when you put pressure on it.

2) It is also worthwhile noting that, unlike the other QMX switches, the signal line from this switch has a more complicated connection to the processor input.? Its pullup resistor is on the 5V SMPS card, which is connected to the switch via two sets of soldered-on connectors - so any flakiness in that path could cause a problem.? Also, its connection to the processor is not direct like the others, it goes through a FET switch (Q202), which has two associated resistors (R202, R209).? One person I helped several months ago had an assembly fault in R202 (it was dislodged), which caused the problem.

3) It is also possible you just have a poor encoder part, whose switch is more bouncy.?

?

I would check those things to see if you can resolve your issue.

Stan KC7XE