Yaesu FT-900 Operating Manual page 30

Operation
ceive frequencies is less than 10 kHz, using the ctari·
fier function
IS
hkety to be the easiest approach.
Use the AlB and SPLIT buttons to set up the two
VFOs. A short explanation of each button function
IS
as follows:
0
The A/B button toggles operation between the
two VFOs, without affec ting the contents of
eithe r. W hen receiving on a memory, it toggles
front and rear halves.
0
Prossing and holding the AlB button
(>If.! sec.)
"equalizes" VFO A &
B.
or the front and rear
memory halves (covered later) if receiving on a
memory (i.e. the contents of the currently se·
lected VFO are wriuen into the other VFO.
0
SPLIT toggles the "hidden" VFO (or memory)
for transmission.
For split operation, first load the VFOs with the
des1red transmit and receive frequencies and modes.
Set your mode and frequency for transmission, then
press
AlB
and set your mode and frequency for recep-
tion. You can usc the AlB button to check your transmit
frequency while receiving (to avoid transmitting un·
necessarily).
Once the two VFOs are set up, just press the
SPLIT button. ''
~i~Mii "
appears at the upper tell edge
of the display, and when you transmit, the display
frequency shills to the other VFO (and mode Indicator,
il different). The contents of both VFOs can be stored
in a memory for future operation with the same fre-
quency pair, as described next.
Memory Features
The 100 memones consist of ninety regular memo·
ries. labeled 0 1 through 90 , and ten special pro-
grammed limit memo ries, labeled P1 through PO (see
the box at the top of the next column). Each store
a
pair of frequencies and modes, plus wide/na rrow IF
selections (for CW and AM modes), clarifier on/off and
offset settings, plus split frequency status. When you
recall a memory, one set of these operating parame·
ters is displayed, and the other set is hidden. For
brevity, we will refer to the displayed set of parameters
as the front hall of the memory, and the hidden set as
the rear hall.
-
VFO·A
FRONT
VF O·B REAR REAR
VFO &
Memory Structure
The front and rear memory halves are toggled by
pressing AlB, just as you can toggle the AlB VFOs
when operating on a VFO (allhough tho display gives
no indication ol which half is which, as it does with the
VFOs}. Like VFO operahon, you can operate split with
the two halves, receiving on the front and transmitting
on the rear; and you can freely tune and change the
mode or clarifier settings o f whichever half is displayed
while receiving. You can also copy a pair of settings
from one memory to another. In fact. you can do nearly
anything with the two halves of
a
memory that you can
with the
AlB
VFOs, except for
a
low differences in
tuning steps. scanning (only the front halves can be
scanned} and the special PMS memories (P 1--PO),
described later.
The VIM, V -M and M- V buttons are used to
control various memory operations, as follows:
0
VIM toggles between memory or VFO opera-
tion. Either VFO-A or VFO·B, or MEM is dis·
played to the left of the frequency to indicate the
current selection (see the box at the upper right
on the next page). If
a
displayed memory has
been retuned. pressing VIM once returns the
display to the original memory contents, and
pressing it again retums to the last -used VFO.
0
V-
M
When receiving on
a
VFO or retuned
memory, holding this
for 1
1:1 second writes the
current operating data to the cvrrently selected
memory. Two beeps sound, and any previous
data in memory is overwritten.
0
M- V copies the pair of frequencies stored in
a memory into the VFOs (by pressing it for
1-12
second). This is described in the next section on
memory storage and recall.
Panel & Microphone DOWN/UP Button Functions
MODE
l
Front Panel
Microphone
T 00WN/UP.6 buttons UPfOWN buttons
VFO·A or VFO·B
HAM Mode: Band Stepping
GEN Mode: 100 kHz/ 1 MHz steps
Duplicates main tuning knob
for VFO tuning & scanning
MEM
Memory channel stepping
Memory channel stepping
and memory scanning
M·TUNE
HAM Modo: Band Stepping
G EN Mode: 100 kHZ/1 MHz
s~ps
Duplicates main tuning knob
tor Memory Tuning
PMS
same as VFO-A or VFO·B same as VFO·A or VFO·B
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