[DSP-10] It works ! VHF VCO, KK7P DSP
Lyle Johnson
[email protected]
Tue, 27 May 2003 11:34:00 -0700
> >Don't forget the 10mH chokes in the DAC output to the DSP-10...
> I do not have those in yet either.. What is the benefit or engineering????
The 10 mH chokes reduce some DDS spurs in the tx output. They are about -40
dB with respect to the carrier, but the chokes eliminate them. Details are
on the website. Thanks to Bob Larkin for finding the problem and the cure.
I'll post the code to swap the DAC outputs later today, too.
-Lyle