41
Enhancing Transmit Signal Quality
FT-891 Advance Manual
Adjusting the SSB Transmitted Bandwidth (SSB Mode)
For SSB transmission, a default bandwidth of 2.4 kHz is available. This bandwidth
provides reasonable fidelity along with good talk power, and is the typical bandwidth used
for decades for SSB transmission. The transmit bandwidth may be varied by the operator,
to provide different levels of fidelity or talk power, according to individual preferences.
Here are the steps to adjust the SSB transmit bandwidth:
1. Press and hold in the [
F
] key for one second
to activate the Menu mode.
2. Rotate the
MULTI
function knob to select
Menu Mode “
11-09
[
SSB TX BPF
]”.
3. Press the
MULTI
function knob, and then
rotate it to select the desired bandwidth.
The available selections are: 100-3000
Hz, 100-2900 Hz, 200-2800 Hz, 300-2700
Hz, 400-2600 Hz. The default is 300-2700
Hz. A wider bandwidth will provide greater
fidelity. A narrow bandwidth will compress
the available transmitter power into less
spectrum, resulting in more “talk power” for
DX pile-ups.
4. When the selection is completed, press the
MULTI
function knob to save the new
setting.
5. Press the [
F
] key to exit the Menu mode and resume normal operation.
r
The higher fidelity associated with wide bandwidth will be particularly enjoyable on the
low bands during local rag-chew QSOs.
