The problem with always rounding off the start frequency is that it
might prevent the operator from setting it where he wants it (a
contest or DX segment, for example). So it's a feature, not a bug.
:=)
It is always possible for an operator to set the band edge where he
wants it with the static or slide settings for Fixed Mode Auto
Adjust. The inability to round the start frequency in the half-span
and full span modes makes the fixed modes much less useful ... and
rather defeats the purpose of full/half span, in my opinion.
I chose half-span adjust with spans of 5, 10, 20, 25, 50, 100 or 200
KHz so I can easily read the frequency of interesting signals from
the graticule. If it is necessary for the user to tune to a specific
frequency. then cycle from fixed to tracking and back to fixed just
to set the start frequency to a round number, the fixed tune modes
might as well be eliminated since the odd frequency scale destroys
most of the utility of the fixed full and half span modes.
73,
... Joe, W4TV
On 6/23/2011 8:06 PM, Alan Bloom wrote:
In version 1.09, the algorithm for rounding off the start frequency
should be unchanged from the last production release (1.05).
The start frequency is rounded off only if the K3 VFO A is jumped to
some frequency well outside the current display span. If you just tune
VFO A past the edge of the display, then the center frequency changes
based on MENU:FixMode, but the start frequency is not automatically
rounded off. That was done on the theory that the operator may have set
a certain display range for a reason and would want it to be the same
when he tunes back again.
So, for example, if you select Tracking mode, the center frequency is
set to the VFO A frequency. You can change the center frequency (and
thus the start/stop frequencies) to whatever you want by tuning the K3
or by using the P3 CENTER control. If you then switch to Fixed-Tune
mode, the center frequency and start/stop frequencies stay the same.
The problem with always rounding off the start frequency is that it
might prevent the operator from setting it where he wants it (a contest
or DX segment, for example). So it's a feature, not a bug. :=)
Alan N1AL
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