5 Mar
2024
5 Mar
'24
10:02 p.m.
I did some analysis on Blinky's transmitter last night and did not see the spurs Bob saw on his board.
My experience with using a spectrum analyzer close in looking for spurs or phase noise is limited so more analysis is needed.
I did look at the harmonics and the second was down 48 db from the fundamental (+15 to -33 dbm).
The third harmonic was in the noise and undetectable.
Now, for receiver board surgery.
Jim McCullers
WA4CWI