AW: AW: AW: AW: [soft_radio] Re: LD-1 Discussion on Garage-shoppe.com Blog

[Stephan Schaa]

Thanks for your explanations, Bob!
 
I understand the principles of driving the mixer with a squarewave signal
and that you use a comparator to change sine to squarewave. 
 
Where I'm failing at is the trick how to receive 30 mhz with a DDS that make
37 MHz max without getting problems with nyquist. Can you use a comparator
to double your VCO frequency without getting problems at the duty cycle?
 
 
Stephan