ICOM IC-7000 说明手册
52
4
RECEIVE AND TRANSMIT
4
• Preamp and attenuator
(p. 72)
➥ Push
[P.AMP/ATT]
momentarily to turn the pre-
amp ON or OFF.
• “
” appears when the preamp is set to ON.
➥ Push
[P.AMP/ATT]
for 1 sec. to turn the attenua-
tor ON.
• Push
[P.AMP/ATT]
momentarily to turn the attenuator
OFF.
• “
” appears when the attenuator is set to ON.
• Twin PBT (passband tuning)
(p. 77)
➥ Push
[PBT/M-ch/RIT]
(switch) momentarily once
or twice to select the twin PBT ON or OFF (M-ch
RIT).
RIT).
• PBT indicator lights green when the twin PBT is se-
lected.
➥ Rotate
[PBT/M-ch/RIT]
(controls–inner/outer).
• Push
[PBT/M-ch/RIT(
CLR
)]
to clear the settings.
• AGC (auto gain control)
(p. 74)
➥ While “M
M--3
3” is selected, push
[F-3
A
AG
GC
C
]
momen-
tarily one or more times to select AGC fast, AGC
middle and AGC slow.
middle and AGC slow.
• “
,” “
” and “
” appears when the
fast time constant, middle time constant and slow
time constant is selected, respectively.
time constant is selected, respectively.
➥ While “M
M--3
3” is selected, push and hold
[F-3
A
AG
GC
C
]
for 1 sec. to enter the AGC set mode.
• Push
[F-2
F
FA
AS
ST
T
]
,
[F-3
M
MI
ID
D
]
or
[F-4
S
SL
LO
OW
W
]
to select
the time constant, then rotate
[DIAL]
to adjust the time
constant.
• Noise blanker
(p. 78)
➥ Push
[NB/ADJ]
to turn the noise blanker ON and
OFF.
• “
” appears when the noise blanker is set to ON.
➥ Push and hold
[NB/ADJ]
for 1 sec. to enter the
noise blanker set mode, then rotate
[DIAL]
to ad-
just the threshold level, or noise pulse width.
• DSP noise reduction
(p. 79)
➥ Push
[NR/LEV]
to turn the DSP noise reduction
ON and OFF.
• “
” appears when the DSP noise reduction is set to
ON.
➥ Push and hold
[NR/LEV]
for 1 sec. to enter the
noise reduction level set mode, then rotate
[DIAL]
to adjust the DSP noise reduction level.
• Manual notch filter
(pgs. 80, 82)
➥ Push
[MNF/ADJ]
to turn the manual notch filter
ON and OFF.
• “
” appears when the manual notch filter is set to
ON.
➥ Push and hold
[MNF/ADJ]
for 1 sec. to enter the
manual notch filter set mode.
• Push
[F-2
N
NF
F1
1
]
,
[F-3
N
NF
F2
2
]
to select the notch filter,
push
[F-4
N
NW
W
]
to set the filter width, rotate
[DIAL]
to
set the attenuated frequency.
•
1
⁄
4
function
(p. 32)
➥ While “M
M--3
3” is selected, push
[F-2
1
1/
/4
4
]
to turn
the
1
⁄
4
function ON and OFF.
• “
” indicator appears when the function is activated.
• Push and hold
[MENU/GRP]
for 1 sec. once or twice
to select the menu group M
M.
• Push
[MENU/GRP]
momentarily one or more times
to select the menu M
M--3
3.
D
Convenient functions for receive