ICOM 269900 사용자 설명서
■ Attenuator function
The attenuator prevents a desired signal from distorting when
very strong signals are near the desired frequency or when
very strong electric fields, such as from a broadcasting sta-
tion, are near your location.
very strong signals are near the desired frequency or when
very strong electric fields, such as from a broadcasting sta-
tion, are near your location.
➥ Push [
Ω
ΩΩ
Ω
ATT] for 1 sec. to toggle the attenuator function
ON and OFF.
• “ATT” appears when the attenuator function is in use.
■ RF gain
The receiver gain can be reduced with the RF gain setting.
This may help to remove undesired weak signals while mon-
itoring strong signals. The RF gain may be useful for setting a
minimum level at which to hear signals for SSB/CW modes .
This may help to remove undesired weak signals while mon-
itoring strong signals. The RF gain may be useful for setting a
minimum level at which to hear signals for SSB/CW modes .
➥ Push [
≈
≈≈
≈
RF GAIN] for 1 sec. to enter the RF gain set-
ting condition, then rotate [R-DIAL] to select the desired
RF gain level.
RF gain level.
• Normally this setting is used maximum level.
• Push [DUALWATCH] to exit the RF gain setting condition.
• Push [DUALWATCH] to exit the RF gain setting condition.
SET
-
RF
-
GAIN:MAX
√
MODE
ANL
AFC
TSQL
USB
14 120
PSKIP
-DUP
SET
-
RF
-
GAIN:5
√
MODE
ANL
AFC
TSQL
USB
14 120
PSKIP
-DUP
Maximum level
Setting level5
[R-DIAL]
RF GAIN
ATT
√
MODE
ANL
AFC
TSQL
FM
146 010
PSKIP
-DUP
ATT
DIAL.SEL
SWEEP
CENTER
T-SCAN
SKIP
M.N
TONE
SET
TS
ATT
RF GAIN
IC Recorder
1
2
3
4
5
6
0
7
8
9
BAND
DUALWATCH
MAIN/SUB
POWER
VFO
MHz
MODE
SCAN
MR
S.MW
SCOPE
LOCK
REC
AFC
“ATT” appears while the
attenuator functions is in
use.
attenuator functions is in
use.
19
4
BASIC OPERATION