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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