I am trying to understand how the sketch for a ubitxV4 arrives at the frequencies it does. My question is Where does the vfo frequency, and first mixer get defined? Where in the sketch does those values get calculated and sent to si5351? I have gone over and over Jerry's si5351 routine but I just can't figure it out.
I have been trying to figure this out but I need some help. I know where the BFO is defined. The first mixer oscillator and vfo seem very cryptic to me....like magic!!
I am trying to come up with a sketch that runs a vfo between 3.0 to 3.5 mhz. The bfo is either 4.001 or 3.99 mhz, plus or minus. Output at 7.0 mhz. Ideally I would love to have one of the clocks generate the 7.0 mhz signal during transmit.
Ideas, please?
Thanks in advance.
K3Bo
