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Haaaa I did exactly the same last night, even though I had read this post... I had my QMX+ driven by WSJT-X and was operating 160m WSPR. I started it and left it running. About 4-5 hours later I came

Hello Hans, fake it disabled did the trick. Enjoy?? Spain? y hasta luego -- Martin DK3UW

Hello Martin > My QMX is COM 7 on the win 11 PC and I have set WSJTX accordingly. Also on This isn't a limitation of QMX. It's a limitation of the USB Virtual COM port device class. It's one-to-one,

On 3/21/25 I had a CW practice / rag chew session on 20 meters. I worked seven stations. I even worked some DX: Date / Time Call Bnd Frequency Mode Power Rec Snt Name SPC# Comments Off 3/21/2025

Brien, I'm noticing the same thing since doing the Calibration, 20 meters is lower than all the other bands. I have about 2 watts CW on 20 meters, but SSB is only .5 watts read on a external peak

I saw weird calibration results, so my question is should I compare performance with/without calibration? I assume a factory reset removes calibration or just turn off Phase and Amplitude distortion

This may be independent of SSB software version.? 20 meter calibration is different than the other bands.? I get no power output indication on the meter during 20m LSB and USB IMD Sync.? I have

Stan Q301 was indeed the culprit! I have a replacement coming that should resolve the issue. Appreciate the excellent suggestion and thanks all for making this list so useful. 73

I rewound the L510 & L513 to the specified winding turns and the output on the 30M and 40M returned to normal, 3.5 & 3.0W accordingly. I rewound L403 on the original T37-6 toroid. I will test today to

Sent an email with a couple questions, thanks!

I recently purchased and received this kit in February. It includes the case and internal GPS module with antenna. I have several kits to complete, and it is larger than I need, so this one is surplus

Hi all, My QMX is COM 7 on the win 11 PC and I have set WSJTX accordingly. Also on COM 7 is the logging program which genreates a conflict as apparently they are unable to share that com port.? WSJTX

Hi GL and Group, Today I tried the QMX in a regular QSO I have weekly.? There seems to be fairly loud "noise", something like impulse noise I'd call it.? My QSO partner said it was something like

Hans, The CW decoder / messaging system has a minor mistake still.? The dictionary used translates the <VE> prosign as? "!"??? ...-. displays "!"? when it should display "VE".? Using a "!" in

Bill, yes the parts are still available. Contact me directly at kthreebo@... Thanks Barry K3BO

Hans, On 003 (20m to 10M QMX), 12m and 10m in DIGI mode seem to have reduced output when using wsjtx.? I unfortunately did not check this on Beta 001 or 002, but it is a noticeable difference from

Hans, I have been having a similar issues on 20m. (20M to 10M QMX). When first running calibration, I used "R" run mode to do everything via the console.? On both 20m and 11m the Phase Error vs DAC

An observation If you have CW practice on and use "tune" it will show a SWR of about 1.7 no matter if a dummy load is connected or nothing is connected. A power meter shows that there is no RF out. It

Hi Mario You might try switching OFF the 80/20m BPF swap in the advanced configuration to see if that makes any difference. That was intended to fix the TX/RX switch instability in QMX PCB Rev 2,

Hi all, Just to say the SSB firmware is working great and getting better with each iteration - this is fantastic work Hans! But I hope you are going to take a break soon, you deserve it :) One