[hpsdr] Power supply filtering

[Henry Vredegoor]

Hello Mike, All,

I was just thinking the same!
I don't know yet though what the exact advantages would be (lack of
knowledge)

One I could imagine is that these frequency (-band(s)) are already
"contaminated" anyway by the clock generating circuits?
Or should we reserve a specific small (-shifted) band for this "pollution"?
Or a few which can be selected by the user as per Jeroen's suggestion?
Or are there maybe software tricks that can be used to suppress these
effectively. (if phase locked)?
I could imagine a sharp notch filter in the receiver software could blank
these (then known) frequencies effectively if they were fixed to a specific
place in the frequency spectrum?

Just some quick thoughts...

73's,
Henry.




> -----Original Message-----
> From: hpsdr-bounces at hpsdr.org 
> [mailto:hpsdr-bounces at hpsdr.org] On Behalf Of Mike Naruta
> Sent: vrijdag 29 juni 2007 17:03
> To: Jeroen Bastemeijer
> Cc: HPSDR
> Subject: Re: [hpsdr] Power supply filtering
> 
> 
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Perhaps we should make sure that Demeter has
> the ability to phase-lock it's switching
> frequencies to Gibraltar; possibly with offsets.
> 
> 
> Mike - AA8K
> 
> 
> Jeroen Bastemeijer wrote:
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