I believe it is on the PX3 To-Do list, Sean.
On 2/20/2015 1:38 PM, Sean Logghe wrote:
(If I am wrong about that I would be thrilled to find that out!)
I am puzzled that I have not seen very many other requests for this feature
for the PX3. This makes me wonder if I am missing the boat somewhere in my
operation of my P3, and therefore, in my hoped for operation of a PX3.
Are there better ways to use the P3? Am I way overstating the behavioral
difference between using Fixed vs. Tracking? I never feel the urge to switch
to Track Mode. Am I being shortsighted? Are there some user's with both the
P3 and the PX3 who can weigh in with their experiences? Is there a better
way? I am always open to enlightenment. ;)
Probably; No; No; I will weigh in below; I prefer Fixed Tune, YMMV.
Analog panadapters have been around since WW2, indeed many used by hams
in the early 50's were WW2 surplus. They, of necessity, operated in
what the P3 calls Tracking mode. Your RX QRG is always in the middle
and as you tune, the band "moves" past it. That has always seemed a
little strange to me. The P3, being digital, offers a lot more in the
way of features, including Fixed Tune mode, where the screen displays a
slice of the band and you tune across it. Much more intuitive to me.
Aside from operator preference, there are some real differences between
the two modes. In Fixed Tune, you can average the spectrum display
because the spectrum limits change only when you tune past the edge and
the averaging has to be restarted. Averaging tends to suppress noise
and can make weak signals stand out better. Averaging would work in
Tracking mode except that every time you tuned ... even 1 Hz ... the
averaging would have to start over. Someone asked about this not long
ago, his spectrum "jumped" every time he tuned.
Fixed Tune also gives you better control over what you're looking at.
For example, you can adjust the CENTER and SPAN so that K1N is near the
left edge of the screen and the pile up spread across the entire screen
to the right. In Tracking mode, K1N will always be in the center, the
pile up will occupy the right half of the screen, and the left half is
sort of "wasted."
I am fairly certain Fixed Tune mode is going to appear for the PX3 soon.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
- www.cqp.org
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