K3 PowerPoint presentation

[David Pratt]

I am very impressed by the new PowerPoint presentation available at
http://www.elecraft.com/manual/K3%20High%20Performance%20%20Design%202009%20w_P3%20pub.ppt

There are some nice pictures of the soon-to-be-launched P3 Panadapter.

73
--
David G4DMP
Leeds, England, UK
------



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[Bill W4ZV]

G4DMP:
 > I am very impressed by the new PowerPoint presentation available at
<http://www.elecraft.com/manual/K3%20High%20Performance%20%20Design%202009%20w_P3%20pub.ppt>http://www.elecraft.com/manual/K3%20High%20Performance%20%20Design%202009%20w_P3%20pub.ppt

         The only point that struck me as odd was the following on
Slide 6 under Dual Diversity RX:

"Pile-ups / QRM spread out spatially. Use your brain to pick out
signals by their L-R location. (+3 to 6 dB)"

Perhaps this should have been mentioned for Binaural AFX instead of Diversity.

                                         73,  Bill  W4ZV



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[Eric Swartz - WA6HHQ]

Hi Bill,

Actually, this does apply to diversity RX. I have listened on 80M and
40m using two antennas, with different orientation and arrival angle
optimization, feeding the two K3 receivers, one in each ear. When
listening to a round table discussion each person appears to sound like
they are coming from a different direction in 'the room'. Listening to
pileups is really interesting for the same reason. I can frequently pick
out signals spatially using diversity RX that would normally be buried
in the pile up cacophony. :-)

73, Eric   WA6HHQ


Bill Tippett wrote:

> G4DMP:
>  > I am very impressed by the new PowerPoint presentation available at
> <http://www.elecraft.com/manual/K3%20High%20Performance%20%20Design%202009%20w_P3%20pub.ppt>http://www.elecraft.com/manual/K3%20High%20Performance%20%20Design%202009%20w_P3%20pub.ppt
>
>          The only point that struck me as odd was the following on
> Slide 6 under Dual Diversity RX:
>
> "Pile-ups / QRM spread out spatially. Use your brain to pick out
> signals by their L-R location. (+3 to 6 dB)"
>
> Perhaps this should have been mentioned for Binaural AFX instead of Diversity.
>
>                                          73,  Bill  W4ZV
>
>
>
>  

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[Bill W4ZV]

On Tue, Sep 15, 2009 at 4:45 PM, Eric Swartz - WA6HHQ, Elecraft <
[hidden email]> wrote:

>
> Actually, this does apply to diversity RX. I have listened on 80M and 40m
> using two antennas, with different orientation and arrival angle
> optimization, feeding the two K3 receivers, one in each ear. When listening
> to a round table discussion each person appears to sound like they are
> coming from a different direction in 'the room'.
>

OK...I understand now.  I was thinking of the CW spatial effect with
Binaural AFX having high pitch on one side and low pitch the other side.
Using diversity for DX signals, I find they often shift between one ear and
the other as the signal changes.  The net result it that you can copy a
signal continuously that might be fading in and out if you were using only
one antenna.

I love diversity and use it 99.9% of the time I operate!  Only the K3 and
Flex 5000 have this capability currently.

73,  Bill  W4ZV
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