Nice of you to blame the operator for a faulty product, Thomas!
As has been said several times in this thread:
Battery:
The QMX was tested on several different power sources, including regulated 12V desktop power supplies, 12V car batteries, and LiFEPO4 batteries. The results were identical in all cases. The problems with the dials not working correctly is not due to the power supply or voltage thereof.
Antenna:
As no transmission was ever made on a non-resonant antenna, Thomas' statement, "The antenna used by N3JF is for sure a horrible mismatch and not advisable: bad receive and no protection on transmit" is disingenuous at best. The telescoping antenna worked perfectly for a quick receiver test with a brand new, just out of the box QMX -- checking for loud FT8 signals. Regardless of how "horrible" the mismatch was, for receiving, it fit the task perfectly. For transmitting, a resonant antenna is a? must, and in all transmitting tests, that's exactly what was used.
Buttons:
On a pre-assembled QMX, one that supposedly passed a quality control check, the obvious malfunctioning of the two major control dials should have been obvious and either fixed at the factory, or the unit should not have passed the quality control check It is clear that this QMX was only ever checked by hooking it up to a computer, not by using the physical controls on the radio. Neither of the two previous QMX radios suffered from this problem, and BOTH were tested in exactly the same way (on different power sources, as described above, adjustment of settings for double-click delay). Additionally, the height of the dials on their shafts were tested and adjusted, and none of it made any difference. The dials on this QMX simply do not work reliably 80%, or more, of the time for single-click, double-clicks, or long-clicks, regardless of settings, button heights on the shaft, or power source used.
Thomas' final statement, "QMX can certainly operated on digital with close to no button interaction" would be correct if, there were no other problems with this particular QMX, but, unfortunately, there are other problems with this particular QMX (as Hans has been made aware of in email). And that's what this thread is about. The QMX that I have in my possession -- not about the QMX in general, though receiving three defective QMX radios in a row, each with different defects, is pretty bad. Thomas' statement fails because this QMX radio could not be used on digital modes. This QMX radio should be able to be used on both digital and non-digital modes, like CW, like all other QMX radios should. But this QMX radio cannot because of the dial problems. I will agree with Thomas when he says, "If you are only digital the QDX might be the better choice."
