Yaesu FT-2000D, Руководство по эксплуатации

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Page 60 FT-2000D O
PERATING
M
ANUAL
I
NTERFERENCE
R
EJECTION
(
S
IGNALS WITHIN
3
KHZ
)
NARROW
(
NAR
)
O
NE
-T
OUCH
IF F
ILTER
S
ELECTION
Main band
(
VFO-A
)
“One-Touch Narrow” Operation
A
DVICE
:
ˆ When the narrow bandwidth is selected, the “ ”
icon will appear in the display and the bandwidth on
the WIDTH indicator in the display will be reduced.
ˆ The bandwidth applied when the [ NAR
] button is
pressed may be adjusted using the Menu. This allows
you to customize a quick-switch “Narrow” bandwidth
matching your operating needs. The default values for
each mode below are underlined.
SSB mode: Menu item “ 106 rdsP SSB NAR ”
200/400/600/850/1100/1350/1500/1650/
1800 /1950/2100/2250 Hz
CW mode: Menu item “ 097 rdsP CW NARR ”
25/50/100/200/300/400/ 500 /800/1200/1400/
1700/2000 Hz
PSK mode: Menu item “ 100 rdsP PSK NAR ”
25/50/100/200/ 300 /400 Hz
RTTY mode: Menu item “ 103 rdsP RTY NAR ”
25/50/100/200/ 300 /400 Hz
ˆ When the [ NAR
] button has been pushed so as to en-
gage the narrow filter, the [ WIDTH
] knob will be dis-
abled, but IF Shift still is operational. For many appli-
cations, you may find that simple adjustment of the
[
WIDTH
] knob, instead of engaging the Narrow filter,
may be satisfactory for interference reduction.
ˆ You may adjust the CW bandwidth using the [ WIDTH
]
knob, even if the narrow filter is engaged. In this case,
available bandwidth selections are 25 Hz ~ 2 kHz.
ˆ When you press the [ NAR
] button in the FM mode,
both the transmit and receive bandwidths are narrowed.
N
OTE
:
When the [ NAR
] button is pressed, the [
WIDTH
] knob no
longer functions (except the CW mode).
Pressing the [ NAR
] button provides one-touch, mode-spe-
cific selection of a narrow IF DSP filter set-
ting that does not depend on the setting of
the [
WIDTH
] knob. Pressing the [
NAR
] but-
ton once more returns the bandwidth control
to the Width/Shift system. The factory de-
fault bandwidths are:
Ú
: Depends on the [ WIDTH
] knob
Sub band
(
VFO-B
)
“One-Touch Narrow” Operation
1. Press the [ B
] button.
2. Within five seconds of pressing the [ B
] button (while
the imbedded orange LED is blinking), press the [
NAR
]
button to toggle the bandwidth between “WIDE” and
“Narrow.” When the narrow bandwidth is selected, the
“
” icon will appear in the display.
[WIDTH] Knob
WIDTH Indicator
[NAR] Button
[B] Button
[NAR] Button
Ú
: Requires the optional CW Narrow Filter
300 Hz: YF-122CN , 500 Hz: YF-122C
O
PERATING
M
ODE
SSB
CW
RTTY/PKT-L/PKT-U
PKT-FM
AM
FM (28/50 MHz bands)
“ON”
1.1 kHz
1.2 kHz
(300 Hz/500 Hz)
Ú
1.2 kHz
9 kHz
6 kHz
9 kHz
“OFF”
2.25 kHz
2.0 kHz
1.2 kHz
16 kHz
9 kHz
16 kHz
[
NAR
]
S
WITCH
O
PERATING
M
ODE
SSB
CW
RTTY/PKT-L/PKT-U
PKT-FM
AM
FM (28/50 MHz Bands)
“ON”
1.8 kHz
500 Hz
300 Hz
9 kHz
6 kHz
9 kHz
“OFF”
Ú
Ú
Ú
16 kHz
9 kHz
16 kHz
[
NAR
]
S
WITCH