good morning Michael, yesterday I replaced the 4 bs170s and the problem remained the same, the strange thing is that I made many QSOs in cw with 5/6W on the bands here in my area, then I tried to transmit in wspr on the 10 mt and after 10 hours of transmission the qmx died, no more rf came out, the problem is that I bought it already built from QRPLAB, I'm unlucky, now I have two non-working QMXs and I can't repair it because it's not clear what it is success, €250 wasted.? I hope you can solve your problem.? Good luck.? 73
Il Lun 26 Feb 2024, 15:15 Michael Trager <michaeltt1960@...> ha scritto:
OK so you have a different problem then I do. My QMX just stops transmiting WSPR after 10 hours or so even though the display still shows the transmission when the time comes. I have noticed this all along (with other firmware revisions).
If I turn the QMX off and on it will work fine again most likely for 10 hours in the WSPR mode.