Hello Evan, how are you? Thanks for answering.
Buy the factory assembled QMX.
My QMX was built for 12V.
I configured all the security measures. Set the SWR protection leaving a maximum of 2. Also set the voltage protection, setting a minimum of 7V and a maximum of 13V. Use an EFHW antenna with a 49:1 ratio.
I powered up my QMX with 11.4V and then made the first QSO at 14.070 with no problems. Then it went to 28.050 and the high SWR protection was activated and the TX was automatically interrupted.
After that the QMX ran out of audio, you can't even hear the band noise.
After all that, I reset the device to factory settings and reset all the security settings (roe and voltage protection).
The QMX turns on and you can see the firmware version.
?
Now I turned it on again and I can hear audio!!!! but it is very low and the volume control does not work.
I don't understand anything
73, Juan LU9CYV
Juan