My 10.140 kit has not been on the air much due to antenna work that needs to be done. Instead I made some spectrum measurements.
Harmonic suppression seems really good.
But there are some spurious about 50 to 60 dB down. Most likely caused by the internal clock of the micro. I plan to add some more decoupling an see if that might help.
A screenshot is in my photo section.
Joop - PE1CQP
