Gordon,
I have a DE version.? All of the 3rd harmonics are more than -60DBc down.
The second harmonics are all in the noise floor except for 20 meters.? That one is -57DBc.
I measured with a TinySA Ultra using the harmonic measurement function.? This is at 15 watts output into a 25-watt DC to 3GHz inline attenuator with a step attenuator to adjust for best readings on the TinySA.? I believe that my prior problems were measurement errors on my part.
Note that some close-in spurs are just under -50DBc, most?likely related to the switching regulator.
I still suspect there is an issue with the v2 driver.
73
Evan
AC9TU
