As a result of the coding, NaP3 has an extra option for tuning a band. Free
changes to Fixed when clicked; in Free the spectrum moves under
the passband while tuning - see the picture below. Fixed holds the span while the passband tunes across it. If the Span is reduced from the
maximum, a right click on the Fixed button when enabled will reveal a choice of incrementing the Span 'window' across the maximum
available in Whole Span or Half Span jumps. The picture below shows a slice of 40m in Fixed tuning with VFOA tuned low, displaying the
band beyond the maximum valid display as a greyed-out 'hyperspace' (actually the out of sight, lower edge wrapping around again). If VFOA
carries on tuning low, the Sub rx frequency will pass into the greyed area, muting the NaP3 sub rx while it is in there.
In Fixed or Free, a left click on Centre will return the VFOA frequency to the centre of
the display. For the context menu from a right click
on Center, see the next topic.
The slider between these buttons adjusts the displayed span width, the actual width being shown in the orange
figures below the display
centre; it can also be adjusted with the mouse wheel by hovering the cursor, or right clicked to jump straight to a selected position.
It is saved per group of modes: in SSB, CW, AM, FM for all rigs plus: the 4 data modes for the
K3 and KX3, RTTY for the K2, RTTY,
PKT, PKTFM for Yaesu, DIGL, DIGU for Kenwood, FSK for the Orion
By left clicking and holding on the spectrum it can be dragged to where the user wants. In Free tuning
mode the spectrum moves under the
fixed VFO. In Fixed tuning the 'dragged' spectrum remains fixed, moving the VFO to maintain the same relative position in the fixed span.
In both cases VFOB remains on the frequency it is set at.