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

[Philip Covington]

On Mon, Dec 1, 2008 at 9:02 PM, Bill W4ZV <btippett at alum.mit.edu> wrote:
>
>
>
> 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
> --
> View this message in context: http://n2.nabble.com/K3---ADAT-ADT-200A-by-HB9CBU-tp1597981p1601915.html
> Sent from the Elecraft mailing list archive at Nabble.com.
>
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The difference is that while W8JI may be an "expert" in many other
(analog) areas, his disparaging comments made on various mailing lists
shows an ignorance in the SDR realm (except maybe for a bad experience
with a SDR-1000).  It is not much different than Joe-blow using his
nifty cell phone while having absolutely no comprehension of how his
voice gets from point A to point B.  It is hard on the old "analog
experts" when the new digital technology is quickly leaving them
behind.  Whether Leif's interests lie in weak signal EME or other
areas, it does not negate the facts that he presents concerning SDR -
those facts apply in Tom's world also.

-- 
Phil Covington
Software Radio Laboratory LLC
Columbus, Ohio
http://www.srl-llc.com