Icom COMMUNICATIONS RECEIVER IC-R3 Instruction Manual

Also see for COMMUNICATIONS RECEIVER IC-R3: Service manual Brochure & specs Service manual

Contents

288 SUBAUDIBLE TONE OPERATION Tone squelch operation◊ OperationThe tone squelch opens only when receiving a signal con-taining a matching subaudible tone. You can silently wait forcalls from group members using the same tone in an ama-teur band.q Set the operating frequency in FM mode.w Set the desired subaudible tone in set mode.• See the following section for programming.e Push [FUNC] + [(MODE) SET] momentarily to enter setmode.• Select a non-band scope screen in advance for color LCD.r Rotate [DIAL] until “Tone Squelch” or “tSqL” appears.• “tSqL” disappears after 1 sec. and “to” appears when color LCD isOFF.t Push [↔] or rotate the tuning dial while pushing [FUNC] toselect “TSQL” (tone squelch).y Push [(MODE) SET] to exit set mode and start the tonesquelch.u When the received signal includes a matching tone, thesquelch opens and the signal can be heard.• When the received signal’s tone does not match, tone squelchdoes not open, however, the S-indicator shows signal strength.• To open the squelch manually, push and hold [SQL]. (default)i To cancel the tone squelch, repeat steps e–y as de-scribed above and select “OFF” in step t.◊ Setting subaudible tones for tone squelchoperationq Select VFO mode or desired memory channel to be pro-grammed.• Each operating band and each memory channel have indepen-dent settings.w Push [FUNC] + [(MODE) SET] momentarily to enter setmode.• Select a non-band scope screen in advance for color LCD.e Rotate [DIAL] until “Tone Freq.” or “tonE” appears.• “tonE” disappears after 1 sec. and “Ct” appears.r Push [↔] or rotate the tuning dial while pushing [FUNC] toselect a subaudible tone.t Push [(MODE) SET] to exit set mode.Tone function setmodeTone Squelch: OFFTone Freq. : 88.5Duplex : OFFOffset Freq.: 0.600Scan Resume : 2SECTone Squelch: OFFTone Freq. : 88.5Duplex : OFFOffset Freq.: 0.600Scan Resume : 2SECTone Squelch: TSQLTone Freq. : 88.5Duplex : OFFOffset Freq.: 0.600Scan Resume : 2SECTone squelch OFF Tone squelch ON