Icom IC-R8500 Instruction Manual

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21PANEL DESCRIPTION!2 AUDIO PEAK FILTER CONTROL [APF] (p. 15)Adjusts the audio peak filter setting to pick up a de-sired audio frequency. Only valid when the [APF]switch is ON.• Clockwise rotation adjusts the filter setting higher; coun-terclockwise rotation adjusts the filter setting lower.!3 ATTENUATOR SWITCHES [10dB]/[20dB]Push to activate one of the attenuators.➧ Push [10dB] to activate the 10 dB attenuator.➧ Push [20dB] to activate the 20 dB attenuator.➧ Push [10dB] + [20dB] to activate the 30 dB attenuator.• 10 dB and 30 dB attenuator cannot be used below 500 kHz.!4 AUDIO PEAK FILTER SWITCH [APF] (p. 15)➥ Push momentarily to toggle the audio peak filtercircuit ON and OFF.• Use the [APF] control to adjust the center of theaudio peak passband.➥ When the audio peak filter circuit is ON, push for1 sec. to toggle the filter setting between normaland narrow.• ‘Narrow’ is available for SSB, CW and AM only.!5 SPEECH/LOCK SWITCH [SPCH/LOCK]➥ Push momentarily to activate the voice synthe-sizer function and have the displayed frequencyannounced.• An optional UT-102 speech synthesizer unit is neces-sary to activate the voice synthesizer function (p. 38).• Automatic announcement at signal detection duringscan is available. Refer to the “REC SPCH” item onp. 31 for details.➥ Push for 1 sec. to activate the lock function (p. 12).• Push for 1 sec. again to cancel the lock function.• The lock function action can be selected in set modeto cover the main dial only, or to cover both the maindial and front panel switches.!6 TUNING STEP SWITCHES [TS▲]/[TS▼] (p. 12)Select the tuning step for the main dial. Push [TS▲]to select a larger tuning step; push [TS▼] to selecta smaller tuning step.• 10 Hz, 50 Hz, 100 Hz, 1 kHz, 2.5 kHz, 5 kHz, 9 kHz,10 kHz, 12.5 kHz, 20 kHz, 25 kHz, 100 kHz and 1MHz are selectable.• Programmable tuning steps can be set between 0.5and 199.5 kHz.➠ To set programmable tuning steps, enter the desiredsteps via the keypad, then push [TSY]or [TSZ].!7 MAIN DIALChanges the operating frequency, set modecontents, etc.!8 BRAKE ADJUSTMENT SCREWAdjusts the main dial tension.!9 FUNCTION DISPLAY (p. 6)Shows the selected frequency, mode, memoryname, etc.@0 S-METER➥ Shows the strength of the received signal.➥ Shows the squelch threshold level when the[SQUELCH] is rotated past the center position.MEMOSEL SKIP VSC DLYSCAN/NAMESCAN SETPROG AUTO PRIOM-SET BANKM-CL MWDELAY/SPEEDM-CHD/S1 QZGHIPRS TUV WXYENTBANKBANKJKL MNOABC DEF . ; ,47 80 CEENTM-CH.95 62 3!9!5 !6 !8!7SKIP-CHOFFkHzDLYM8500Center frequencyis shifted up.Center frequencyis shifted down.