Icom IC-R20 Instruction Manual

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Contents

Icom IC-R20 Instruction Manual Manual pdf 32 page image

■ Attenuator functionThe attenuator prevents a desired signal from distorting whenvery strong signals are near the desired frequency or whenvery strong electric fields, such as from a broadcasting sta-tion, are near your location. The attenuator gain is about 30dB.➥ Push [ΩΩΩΩ ATT] for 1 sec. to toggle the attenuator functionON and OFF.• “ATT” appears when the attenuator function is in use.■ RF gainThe 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 aminimum level at which to hear signals for SSB/CW modes .➥ Push [≈≈≈≈ RF GAIN] for 1 sec. to enter the RF gain settingcondition, then rotate [R-DIAL] to select the desired RFgain level.• Normally this setting is used with maximum level.• Push [DUALWATCH] to exit the RF gain setting condition.SET-RF-GAIN:MAX√MODE ANLAFCTSQLUSB14 120PSKIP-DUPSET-RF-GAIN:5√MODE ANLAFCTSQLUSB14 120PSKIP-DUPMaximum levelSetting level5[R-DIAL]RF GAINATT√MODE ANLAFCTSQLFM146 010PSKIP-DUPATTDIAL.SEL SWEEP CENTERT-SCAN SKIP M.NTONE SET TSATT RF GAIN IC Recorder1 2 34 5 6 07 8 9BANDDUALWATCH MAIN/SUB POWERVFOMHz MODESCAN MRS.MWSCOPELOCKRECAFC“ATT” appears while theattenuator functions is inuse.194 BASIC OPERATION