Porting I/Q routine #3
Description
Hello Vojtech,
It has been many years but I was hoping you might be able to lend a hand. We (Multus SDR, LLC - https://www.multus-sdr.com/) are still plugging away with designing and producing transceivers based on the original Basic. We now have a rig called the Proficio and soon will have another adaption called the Proficio MK II. When it comes to CW, we have taken a hardware approach to QSK operations. The hardware is working well but I have hit somewhat of a stumbling block. So, I have taken a look at your QSK code for the Basic to generate an I/Q audio signal when in TX mode. Previous to this I was attempting to shift the Si5351 oscillator to provide the CW pitch offset required so that CW operations works correctly. Shifting the Si5351 does not work since it takes a relatively long time to shift the main oscillator frequency.
Your QSK code does work but I have one problem is that the shift is far to large. I was hoping you would take a look at my code and let me know where I have gone wrong.