Yaesu FT-991 Operating Manual page 75

t
ransMitter
S
For split TX/RX operation in "casual" pile-ups, where the split is less than 10 kHz, the TX Clarifier (Offset Tuning) fea-
ture may be utilized.
1. Press the MENU(SETUP) button to enter the Menu
mode.
2. Rotate the MULTI knob to select Menu item "040
CLAR MODE SELECT".
3. Touch [ SELECT] on the LCD, then rotate the
MULTI knob to set this Menu item to "TX" (the de-
fault setting is "RX").
4. Touch [ ENTER ] on the LCD to save the new set-
ting.
5. Press the MENU(SETUP) button or touch [ BACK ]
on the LCD to exit to normal operation.
6. Press the CLAR button. The "TX" icon will appear
in the TFT display.
q p :
uick oint
The Clarifier is frequently used for receiver offset
tuning. However, for DX pile-ups where the DX
station is using a split of less than 10 kHz, the TX
Clarifier function is usually the quickest way to set
the transmitter to the desired offset frequency.
FT-991 O
peraTing
o
plit perAtion
M
anual
c
onvenience
u tx c
Sing the lAriFier
7. Rotate the CLAR/VFO-B knob to set the desired
transmitter offset. A maximum split of ±9.999 kHz
may be set.
8. To exit from TX Clarifier operation, press the CLAR
button once more. The "TX" icon will disappear
from the display.
A :
dvice
 When listening to a "pile-up" calling a DX station, in
order to find the station currently being worked, you
may press the CLAR button. Then, use the CLAR/
VFO-B knob to zero in on the station calling the DX
(use the SPOT function on CW for precise alignment
of your frequency). You may then press the CLAR
button again to cancel the RX Clarifier, and return to
reception on the DX station's frequency.
 Just as with receiver Clarifier operation, the amount
of offset from the original VFO frequency will ap-
pear in the display.
 As with receiver Clarifier operation, when you turn
the TX Clarifier off, the last-used offset is remem-
bered, and will be available if you turn the TX Clari-
fier back on. To clear the Clarifier offset, press and
hold the CLAR button for more than 1 second.
q p :
uick oint
When attempting to work a DX station on CW in a split
frequency pile-up, remember that a large number of oth-
er stations may also be using Yaesu transceivers with ca-
pability similar to that of your FT-991. On the DX side
of the pile-up, everyone calling precisely on the same
CW frequency will sound like a single tone! So you may
have more success if you use the RX Clarifier to find a
hole in the pile-up, instead of trying to zero-beat the last
station worked by the DX station.
f
eatures
CLAR/VFO-B Knob
MENU(SETUP) Button CLAR Button
MULTI Knob
Page 73