Hi,
Has anyone tried replacing the MT34TL/AS11D buck converter/supply chip with a LDO regulator as Steve Markgraf suggested - my goal is to remove the harmonics, for HF tx.
Remove the harmonics ? The fl2k will always have harmonics, that's just the way it is. Only way to get rid of theses is to post-filter. What a clean supply does is remove the spurs.
Cheers,
Sylvain