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After a factory reset my QMX+ runs fine for hours running wspr. If I attempt to change parameters through the front panel...turn on clock...dot delim etc it will lose audio connectivity to wsjt and

Thank you Stan! I did as you said and now I have Terminal and my PTT is enebled! BR/Sergey UB3AZK

I have exactly the same problem after updating the software, the radio stopped receiving, I can hear noise.

My radio generated an SWR alarm after WSJT-x briefly transmitted on one of the "receive only" bands during band hopping. Whilst this is a very desirable traits, I discovered that it was no longer

I am having the same problems de VK6XT

Yes, they are also a slightly different shape.? And made with a completely different manufacturing process and material, a ferrite blend, rather than the powdered iron typically used in the other

When you turned it off and back on, did you do it with the switch on your power supply, or with the QMX front button? Your symptoms are that you now have an internal power fault, which prevents the

Oops, I wrote too quickly again.? In your case it could also be something else.? A voltage very near your 7V input should be appearing at VI of IC101, rather than the 5V that you see.?? Check

I was just building a microphone for the qmx and then I plugged it into my power supply to test it. I on purpose to turn the voltage down from 13.8 and then turn it on. It worked fine but I needed to

Stan, This seems to have worked for me. Thank you! It took some time playing with the limit/center values to fix 17,15,12, and 10 meters. 160 and 11 are still broken but I don't use either of them.

Sorry for my previous message (now deleted).?? Ludwig's value was correct, as always. After removing the SMPS cards to test them, as Ludwig has recommended, also measure the resistance between Vcc

I'm very glad you got it working! I'm very sad it failed again. When pushing the card into the bottom enclosure, we almost always 'torque' the front panel a bit.? This could cause the connectors to

Try several different settings of either 'Frequency min.' and/or 'Frequency center'.? I was able to (with a few trials) get the plot to complete out to the full x-axis range.? I think that a

Based on some experimentation with some similar phase calibration results on a couple of bands on two of my QMX, it appears to me that when the phase distortion curve is started, but not completed,

Ellis Distortion on one band only could be RF getting into audio. See if same thing happens when transmitting into dummy load. And maybe an external signal report. Curt

Thanks everyone. I had done everything correctly but in my excitement to try out the rig, not fitted the link in JP501. Obviously skimmed over page 36 as well !

Jeremy, I would test both power boards offline following QMX QMX_Plus Power supply test Process ( /g/QRPLabs/wiki/37128 ) from the QRP Labs Wiki. IC101 VI should be at least 5.3 V +

Tell it to enjoy it's holiday. I have plans on its return.

Hi, I installed the 1_01_003 beta firmware yesterday and I am amazed at how it has transformed my QMX+ (rev 2 board). I am, however, perplexed at the fact that the SSB audio is distorted (on another

Post calibration - which was run without any other adjustments.