Icom IC-R20 instruction manual Attenuator function, RF gain

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 [ΩΩ ATT] for 1 sec. to toggle the attenuator function ON and OFF.

• “ATT” appears when the attenuator function is in use.

DUALWATCH	MAIN/SUB		POWER
BAND	VFO	MODE	MR		-DUP TSQL AFC
	MHz	SCAN	S.MW		MODE FM ANL
DIAL.SEL	SWEEP	CENTER
					146 010
T-SCAN	SKIP	M.N
1	2	3	SCOPE
4	5	6	0 AFC		PSKIP
TONE	SET	TS			√
7	8	9	LOCK	ATT	ATT
ATT	RF GAIN	IC Recorder

REC

“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]	-DUP TSQL AFC
	MODE USBANL
	14 120
	PSKIP
	√
	SET-RF-GAIN:MAX
	Maximum level
	-DUP TSQL AFC
	MODE USBANL
RF GAIN	14 120

PSKIP

√

SET-RF-GAIN:5

Setting level5

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