(Ssb/Cw/Rtty/Pkt Modes) - Yaesu FTDX9000D - DATA MANAGEMENT Operation Manual

WIDTH ( IF DSP B
The IF Width tuning system allows you to vary the width of the DSP IF passband, so as to eliminate interference. More-
over, the bandwidth may actually be expanded from its default setting, should you wish to enhance incoming signal
fidelity when interference on the band is low.
SUB (VFO-B) [ WIDTH ] knob
Main (VFO-A) Band IF Width Operation
Rotate the Main (VFO-A) [ WIDTH ] knob to adjust the
bandwidth. Counter-clockwise rotation reduces the band-
width, while clockwise rotation increases the bandwidth.
Sub (VFO-B) Band IF Width Operation
1. Press the Sub (VFO-B) band's [ RX ] switch to engage
Dual Receive operation.
2. Rotate the Sub (VFO-B) [ WIDTH ] knob to adjust the
bandwidth. Counter-clockwise rotation reduces the
bandwidth, while clockwise rotation increases the
bandwidth.
Referring to Figure B, you can see the default bandwidth
with the [ WIDTH ] control set to the 12 o'clock position.
By rotating the [ WIDTH ] knob to the left, the bandwidth
will narrow (see Figure (A)), while rotation of the [ WIDTH ]
knob to the right, as depicted in Figure (C), will widen the
bandwidth.
The default bandwidths, and total bandwidth adjustment
range, will vary according to the operating mode:
SSB Mode
200 Hz ~ 4.0 kHz (bandwidth at 12 o'clock position of
[ WIDTH ] : 2.4 kHz).
CW/RTTY/PKT Modes
25 Hz ~ 2.4 kHz (bandwidth at 12 o'clock position of
[ WIDTH ] : 500 Hz).
FT 9000D O
DX PERATION
I
NTERFERENCE
) T
ANDWIDTH UNING
M
ANUAL
R
EJECTION ( S
( SSB/CW/RTTY/PKT M
MAIN (VFO-A) [ WIDTH ] knob
MAIN (VFO-A)
WIDTH (BW) control may
be observed on the TFT
SUB (VFO-B)
WIDTH (BW) control may
be observed on the TFT
A A A A A
D D D D D VICE
You may observe the effects of adjustment of the
[ WIDTH ] control on the TFT.
A B
IF BANDWIDTH IF BANDWIDTH
)
3
IGNALS WITHIN KHZ
)
ODES
SUB (VFO-B)
[ RX ] switch
VICE VICE VICE VICE
C
IF BANDWIDTH
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