Icom IC-R20, Инструкция по эксплуатации

Страница: 26 / 88

■
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.
➥
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 .
➥
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.
• Normally this setting is used maximum level.
• 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.
19
4
BASIC OPERATION