23772Re: [softrock40] Bye Bye Birdies- Spurs
- Aug 2, 2008On Aug 1, 2008, at 12:45 PM, k5nwa wrote:
> At 02:27 PM 8/1/2008, you wrote:I know. That is an extremely annoying 'feature' of the Flex 5000 too.
> >By replacing the DDS (AD9854)in my Flex clone with the SI570
> >gone are the annoying DDS spurs. Tony's new divider clock
> >circuit was used as the interface.
> > This was made possible by the modified Power SDR code by
> >Christos SV1EIA with smooth tuning. This code now also stores both
> >transmit and receive image rejection data for each band separately
> >another big improvement. If you plan on using SSB or AM modes take a
> >look at the modified Power SDR by Christos.
> >Joe wa9cgz
> Getting rid of spurs, priceless!
> Good going, my SDR-1000 just ran out of warranty, that looks like a
> worthwhile mod.specially on 10M and 6M the spurs drive you crazy.
A *LOT* more birdies and spurs than I ever imagined would be there.
Is the phase noise in the 570 as good as the DDS?
73 de Brian, WB6RQN
Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com
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