[Elecraft] K3/KX3 CW Sidetone Pitch

[Phil Hystad]

I am asking this question of K3 and KX3 since I am assuming that the answer is the same for both rigs.  If it is different, maybe someone can let me know.

Question:  Is the CW sidetone generated as a separate audio oscillator circuit or is it generated from a BFO type circuit?  This morning, I started thinking of this question and I realized that I don’t know too much about how CW sidetone is implemented.  I am thinking it is a separate audio oscillator but I may very well be wrong.

Follow up Question:  If the CW sidetone is a separate audio oscillator, what is happening (details preferred) when you use the sidetone to zero beat a CW signal.

Thanks,

73, phil, K7PEH