Quick Split Operation - Yaesu FT-991 Operating Manual

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A powerful capability of the FT-991 is its flexibility in Split Frequency operation using the VFO-A and VFO-B fre-
quency registers. This makes the FT-991 especially useful for high-level DX-peditions. The Split operation capability is
very advanced and easy to use.
1. Rotate the Main Tuning Dial knob to set the desired
RX frequency.
2. Press the A/B button, then rotate the Main Tuning
Dial knob to set the desired split TX frequency.
3. Press the A/B button, then press the SPLIT button.
The VFO-B frequency will be shown in the TFT dis-
play and the LED indicators will appear as below:
VFO-A RX Indicator: "ON" (LED glows Green)
VFO-A TX Indicator: "OFF" (LED Off)
VFO-B RX Indicator: "OFF" (LED Off)
VFO-B TX Indicator: "ON" (LED glows Red)
During Split operation, the VFO-A register will be used
for reception, while the VFO-B register will be used for
transmission. If you press the SPLIT button once more,
Split operation will be cancelled.
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 During Split operation, pressing the A/ B button will
reverse the contents of VFO-A and VFO-B. Press the
A/B button once more to return to the original fre-
quency alignment.
 During Split operation you may listen to the TX fre-
quency temporarily while pressing the TXW button
located on the bottom left of the Main Tuning Dial
knob.
While pressing the TXW button during split opera-
tions, the frequency of transmit on VFO-B can be
changed.
 During Split operation it is also possible to set VFO-
A and VFO-B to different Amateur bands if a multi
band antenna is used.
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S -F
plit requency
A/B Button
SPLIT Button
TXW Button
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Quick Split Operation

The Quick Split feature allows setting a one-touch offset
of +5 kHz compared to the VFO-A frequency, to be ap-
plied to the transceiver VFO-B (transmit) frequency,
1. Start with regular transceiver operation on the VFO-A.
VFO-A RX Indicator: "ON" (LED glows Green)
VFO-A TX Indicator: "ON" (LED glows Red)
VFO-B RX Indicator: "OFF" (LED Off)
VFO-B TX Indicator: "OFF" (LED Off)
2. Press and hold in the SPLIT button for one second
to engage the Quick Split feature, and apply a fre-
quency 5 kHz above the VFO-A frequency to the
VFO-B frequency register.
The VFO configuration will then be:
VFO-A RX Indicator: "ON" (LED glows Green)
VFO-A TX Indicator: "OFF" (LED Off)
VFO-B RX Indicator: "OFF" (LED Off)
VFO-B TX Indicator: "ON" (LED glows Red)
3. Press and hold in the SPLIT switch for one second
to increment the Sub (VFO-B) offset frequency an-
other +5 kHz.
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 The offset of VFO-B from VFO-A is programmed
via the Menu and is set to +5 kHz at the factory.
However, other offsets may be selected using the fol-
lowing procedure:

1. Press the MENU(SETUP) button to engage the
Menu mode.
2. Rotate the MULTI knob to select Menu item "035
QUICK SPLIT FREQ".
3. Touch [ SELECT ] on the LCD, then rotate the
MULT knob to select the desired offset. The avail-
able setting range is –20kHz - +20kHz (factory de-
fault: +5 kHz).
FT-991 O M
peraTing anual