Attenuator Function; Rf Gain - Icom IC-R20 Instruction Manual

4
BASIC OPERATION

■ 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. The attenuator gain is about 30
dB.
➥ Push [
ATT] for 1 sec. to toggle the attenuator function
Ω Ω Ω Ω
ON and OFF.
• "ATT" appears when the attenuator function is in use.
DUALWATCH MAIN/SUB POWER
VFO MODE MR
BAND
MHz SCAN S.MW
DIAL.SEL SWEEP CENTER
1 2 3
SCOPE
T-SCAN SKIP M.N
4 5 6 0
AFC
TONE SET TS
7 8 9
LOCK
ATT

RF GAIN

IC Recorder
REC
19
-DUP TSQL AFC
MODE FM ANL
146 010
PSKIP
√
ATT
ATT
"ATT" appears while the
attenuator functions 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 setting
≈ ≈ ≈ ≈
condition, then rotate [R-DIAL] to select the desired RF
gain level.
• Normally this setting is used with maximum level.
• Push [DUALWATCH] to exit the RF gain setting condition.
[R-DIAL]
RF GAIN
-DUP TSQL AFC
MODE USB ANL
14 120
PSKIP
√
SET-RF-GAIN:MAX
Maximum level
-DUP TSQL AFC
MODE USB ANL
14 120
PSKIP
√
SET-RF-GAIN:5
Setting level5