[Elecraft] K3 & ADAT ADT-200A by HB9CBU

[Bill W4ZV]

Joe Subich, W4TV-3 wrote:
> 
> Processing 
> gain may be of value at microwave frequencies with a quiet 
> sky but it is not going to help below 10 MHz with extreme 
> signals and high noise levels.
> 

Joe, as near as I can tell, you've hit on the primary cause of arguments
between intelligent folks like Leif SM5BSZ and Tom W8JI (both were on ARRL's
committee to review their Product Test procedures).  One is talking weak
signal EME, galactic noise and extremely wide interference spacings; the
other is talking about weak signal 160 meters, atmospheric noise and
relatively close interference spacings (e.g. the ARRL 160 or CQ 160
contests).  It may be that both are right for their respective applications,
so we may be having a discussion of apples and oranges.  Normal HF
applications of the K3 are much closer to Tom's world than Leif's world
IMHO.

I'm still waiting for independent measurements of BDR that show other SDR
approaches are near the results of the K3.  When I see that, I'll be the
first to be a believer.  Maybe the Perseus will do this, but I haven't seen
the "corrected" ARRL results yet.  When it comes to receiver performance,
I'm from Missouri (the "Show Me" state).

73,  Bill
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