Yaesu FT-890 Operating Manual page 32

Memory Features
Operation
To limit the tuning range to a particular sub-
band, store the edges of the range in memories
P1 and P2. Then recall either memory and acti-
vate memory tuning. Tuning and scanning now
loop around the ends of the stored range, keep-
ing operation inside the programmed subband.
You can change modes and use the clarifier as
when retuning any other memory, but don't
bother to press
AIB
to switch halves of the mem-
ory, or press the
DOWNIUP
buttons: as soon as
you try to tune with the knob or microphone
buttons, operation instantly switches back to the
subband. Also, if you activate split transmit/re-
ceive, your transmit frequency will be whatever
you stored in the back half of the memory you
started on (PI or P2).
Example: Limit tuning and scanning to the 17-m
WARC band.
0 Press
VFOIM
once or twice, if necessary, to
display either
"VFO-A"
or
"VFO-B"
at the left.
Then tune to the low edge of the 17-m band:
18.068 MHz. Also select the mode you expect
to use most often (here, USB or CW).
0 Press
AIB
to select the other VFO, and tune to
the high edge of the 17-m band: 18.168 MHz.
Again, select a mode you expect to use (it does
not need to be the same).
0 Press
VFO- M
momentarily to activate mem-
ory checking, and press the
DOWNlllP
buttons
to select memory P2 at the left. Then hold
VFO
-
M
for h second to write the two VFOs to the
memory. That takes care of the high edge.
0 Press
AIB
to select the other VFO with the low
band edge.
0 Press
VFOc M
momentarily to activate mem-
ory checking, and press the
DOWN
button to
display memory PI. Then hold
VFOcM
for
' n
second to write the VFOs to memory P1
(with front and back reversed from memory
P2). That stores the low edge into the front of
memory PI.
0 Press
VFOIM
to recall memory PI, and turn the
tuning knob (to activate memory tuning).
Tuning and scanning are now limited to the
18.068- to 18.168-MHz range until you press
VFOIM
to return to memory channel operations,
VFOc M
to copy the displayed frequency to a
memory, or
M-VFO
to write the displayed fre-
quency to a VFO.
In this example, note that we overwrote the
rear half of each memory with data we didn't
need. For this reason, you may want to use the
P1 and P2 memories only for subband-limited
operation. In fact, if you want to make optimum
use of this feature with the band-independent
VFOs, you could keep all VFO-As (that is, on
each amateur band) set to the low edge of the
subband you use, and all VFO-Bs set to the high
edge. By using the above procedure to load the
PI and P2 memories when you change bands,
and operating only in the memory tuning mode
on the P1 or P2 memory, you can have the sub-
band limits always enabled and never use the
VFOs (except for storing the band limits).
Of course you don't have to use the VFOs to
set u p or store subband limits all the time, and
for non-amateur-band subbands, such as the HF
broadcast bands, you indeed cannot store the
subband limits in the VFOs. Fortunately, since
the
V F O c M
button lets you copy between
memories when memory tuning is active, you
can use the regular memories (01 through 30) for
storing subband limits. The back halves of the P1
and P2 memories serve to simplify this process,
as illustrated in the next example:
Example: Use memory 19 to store the 19-m short-
wave broadcast band edges.
0 P ~ e s s
VFOIM
once or twice, if necessary, until
either
"VFO-A"
or
1 1 ~ ~ ~ - ~ "
appears at the left.
Then tune to the low edge of the 19-m band:
15.100 MHz. Also press the mode button for
the mode you expect to use most often (USB,
LSB or AM wide or narrow).
0 Press
AIB
to select the other VFO, and tune to
the high edge of the 19-m band: 15.600 MHz.
Again, select a mode you expect to use (it does
not need to be the same).
0 Press
VFO-M
momentarily to activate mem-
ory checking, and press the
DOWN
or
UP
but-
ton to select memory 19 at the left. Then hold
VFO-M
for
h
second to write the two VFOs
to the memory.
Now, to use the stored subband limits, you
need to copy them from the regular memory to
the front halves of the P1 and
M
memories:
0 Press
VFOIM,
if necessary, to select memory
recall operation
("MEM"
displayed at the left),
and press the
DOWN
or
UP
button, if necessary,
to select memory 19, where the 19-m band
limits are stored. The frequency displayed
should be 15.600 MHz if the above example
was successful.
0 So far in this example, we have stored the high
band edge in the front half of the memory, and
the low band edge in the rear half. We want to
copy the low edge into memory PI, and the
high edge into memory P2 (although we
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