Width (If Dsp Bandwidth) Tuning (Ssb/Cw/Rtty/Pkt Modes) - Yaesu FT DX 9000MP 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. Moreover,
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
( VFO-A ) IF W
M B
AIN AND IDTH
Rotate the Main (VFO-A) [ WIDTH ] knob to adjust the
bandwidth. Counter-clockwise rotation reduces the band-
width, while clockwise rotation increases the bandwidth.
( VFO-B ) IF W
S B
UB AND IDTH
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 band-
width.
The default bandwidths, and total bandwidth adjustment range,
will vary according to the operating mode:
SSB Mode
200 Hz ~ 4 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 9000MP O
DX PERATION
I I I I I
NTERFERENCE NTERFERENCE NTERFERENCE
NTERFERENCE NTERFERENCE
) T
ANDWIDTH UNING
O
PERATION
O
PERATION
M
ANUAL
R R R R R
EJECTION EJECTION EJECTION
EJECTION EJECTION
( SSB/CW/RTTY/PKT M
WIDTH system may be observed on the LCD
MAIN(VFO-A) [WIDTH] Knob
WIDTH system may be
A A A A A
D D D D D VICE
You may observe the effects of adjustment of the
[ WIDTH ] control on the LCD display.
A
IF BANDWIDTH IF BANDWIDTH
(S (S (S (S (S 3 3 3 3 3
IGN IGN ALS ALS WITHIN WITHIN KHZ KHZ
IGNALS IGN IGN ALS ALS WITHIN WITHIN WITHIN KHZ KHZ KHZ
)
ODES
VDD BIAS TEMP SWR
observed on the LCD
VICE VICE VICE VICE
C
B
IF BANDWIDTH
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) ) ) ) )