I have tested my zBitx in CW mode with DRIVE=100 with 50 Ohm 40 dB attenuator and tinySA, on all bands.
Sorry, I took the pictures with a mobile, so the quality is poor.
Below are the results.
?
10 m:
12 m:
15 m:
?
17 m:
?
?
20 m:
30 m:
?
40 m:
?
60 m:
?
80 m:
?
So it looks like the spurs are not always 40 dBc below the carrier...
?
73,
Wojtek SP5DAA
?
