P3 Waterfall

[Elecraft mailing list]

I recently purchased a new P3/SVGA unit, and am using it with my K3 (serial # 6999).  I have a few questions.  First, when I engage the Marker function and use it in the waterfall window, it comes up on the P3 screen, but not on the external monitor (although it does work on the upper panadapter portion of the monitor screen).  How do I get it to work on both waterfall screens?  Second, I run the K3 in conjunction with my Flex5000A.  I notice that the Flex waterfall appears to have considerably more detail and a more robust color scheme than the P3.  The Flex also has more detail (I see signals on the Flex that barely come up on the P3).  I switch between the same antenna, so that should not be a factor.  Is there a sensitivity adjustment on the P3 that I need to play with?  If not, I must admit that the P3 waterfall does not appear to perform nearly as well as the Flex.  Finally, once you assign a function to an FN series button, is there a way to delete the assignment, short of assigning another function over it?  Thanks for your input.     K0GFY  R. Hunter Ellington
303-996-6585/720-560-8139
P.O. Box 44
Larkspur, CO 80118
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[Jim Brown-10]

On Tue,3/24/2015 12:44 PM, Hunter Ellington via Elecraft wrote:
> Is there a sensitivity adjustment on the P3 that I need to play with?

All of your concerns are answered in the manual. The P3 is a very
powerful and versatile product, and the SVGA board increases its
capabilities. It's scan width can set to any value between 2 kHz and 200
kHz. Amplitude range can be set between about 10 dB and 80 dB. The unit
can be calibrated to the voltage at the K3's input terminals (a signal
generator is required). Both amplitude and waterfall can be averaged or
not, and average settings are adjustable. There are separate settings
for the P3 display and the external display. The frequency resolution is
quite good, and is improved by a factor of 10 or more by the separate
FFT used to drive the SVGA output.

Here's a link to some lab quality spectrum measurements I've done with
my P3/SVGA. k9yc.com/FTDX5000_Report.pdf The P3/SVGA combination has
frequency resolution that is roughly 100X better than my HP 8509D.

73, Jim K9YC


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[Alan Bloom]

You can increase the waterfall sensitivity by adjusting the REF LVL to
place the noise right at the bottom of the spectrum display and then
increasing the SCALE setting.  The same REF LVL and SCALE settings are
applied to both the spectrum and the waterfall displays.  For further
details, see the PX3 User's Manual section called "How to Set Up and
Interpret the OX3 Display".

To erase a FN key setting, use the FN Erase menu function.  You can also
over-write it by assigning a different function.

Alan N1AL


On 03/24/2015 12:44 PM, Hunter Ellington via Elecraft wrote:

> I recently purchased a new P3/SVGA unit, and am using it with my K3
> (serial # 6999).  I have a few questions.  First, when I engage the
> Marker function and use it in the waterfall window, it comes up on
> the P3 screen, but not on the external monitor (although it does work
> on the upper panadapter portion of the monitor screen).  How do I get
> it to work on both waterfall screens?  Second, I run the K3 in
> conjunction with my Flex5000A.  I notice that the Flex waterfall
> appears to have considerably more detail and a more robust color
> scheme than the P3.  The Flex also has more detail (I see signals on
> the Flex that barely come up on the P3).  I switch between the same
> antenna, so that should not be a factor.  Is there a sensitivity
> adjustment on the P3 that I need to play with?  If not, I must admit
> that the P3 waterfall does not appear to perform nearly as well as
> the Flex.  Finally, once you assign a function to an FN series
> button, is there a way to delete the assignment, short of assigning
> another function over it?  Thanks for your input.     K0GFY  R.
> Hunter Ellington 303-996-6585/720-560-8139 P.O. Box 44 Larkspur, CO
> 80118 ______________________________________________________________
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