Doug:
I'll run that combination over the weekend and add it to the page.
If someone who enjoys Windows programming would like to work with me, we
could easily develop a simple utility program so that anyone could
generate these plots for their own K3 filters. It requires a low phase
noise signal such as a 10 MHz reference from a frequency counter, but
nothing else beyond a K3.
The program I've written is pretty crude in Liberty Basic and requires
post-processing in Excel and then Origin to generate the plots. It could
all be combined into a Windows program but writing Windows code is about
as low on my list of enjoyable activities as it goes.
Jack
DOUGLAS ZWIEBEL wrote:
This is (more) really neat stuff...THANKS!
One thing I'd like to see, is the 500 Hz 5-pole CW/Data Filter graph
done at 600hz using the 500hz roofing filter. Your measurement
"jumps" from 500hz to 1.5kc. What happens when the DSP is in control
but the 500hz is not, at something "just above" the BW of the 500?
Just curious.
Thanks,
de Doug KR2Q
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