On 3/8/2015 6:59 PM, steve wrote:
OK, thank you. I still don't see why I would use/want it.
I find (for me) what works great is to move the A/B cursor on the PX3 to
the signal I want and tap the knob to go there.
Possible confusion here. The VFO A and B cursors are always there in
Fixed-Tune mode [B may be off-scale right or left but there's an arrow
to tell you which way it is]. They're where your VFO's are tuned, you
don't have to do anything to "go there," you're there. Marker A and B
are independent of this, you can turn them on or off, and if on and you
put Marker A on a signal and tap the knob, you'll QSY there.
It seems to me with fixed mode I am still going to have to deal with
display edges when I scan to/past the edge (unless there is an automatic
new window).
Yes, there is a new window, you don't have to do anything except keep
tuning. On the P3 [and I'll bet the PX3 too when it is released], you
have a choice of two behaviors: If you tune off the end of the display,
you can set it to either give you the next full span, or the next
half-span [i.e. tuning down past the edge, you see the lower half of the
span you were on on the right and the upper half of the span you're
tuning into on the left]. I use the full span shift. I set my span and
centering so if I tune far enough down or up, the edge of the display
will be the band limit. YMMV
I guess I can see that moving the A cursor over the spectrum, being able
to hear what you see and not having the display have to keep up with
changes ("bounce"), might be more what my friend would have liked during
the contest this weekend as we were also doing a radio demo for the cub
scouts.
That's the second advantage of Fixed-Tune, the averaging in the spectrum
plot remains constant until tuning past the end of the span. In tracking
mode, the averaging must restart whenever you tune ... 1 Hz or more.
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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