Icom IC-R2 Instruction Manual

Also see for IC-R2: Service manual Instruction manual

228 SUBAUDIBLE TONE OPERATIONn Tone squelch operationD 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.w Set the desired subaudible tone inexpanded set mode.• See right for programming.e Push [V/M] for 2 sec. to enter ex-panded set mode.r Rotate [DIAL] until “TSQL” ap-pears.• Turn the expanded set mode ON forselection. (p. 25)• “TSQL” disappears after 1 sec. and “tO” appears.t While pushing [FUNC], rotate [DIAL] to select “TSQL.”y Push [V/M] to exit set mode and start the tone squelch.u When the received signal includes a matching tone,squelch 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].i To cancel the tone squelch, repeat steps e–y as de-scribed above and select “OFF” in step t.D Setting subaudible tones for tone squelchoperationq Select VFO mode or desired memory channel to be pro-grammed.w Push [V/M] for 2 sec. to enter expanded set mode.e Rotate [DIAL] until “TONE” appears.• Turn the expanded set mode ON for selection. (p. 25)• “TONE” disappears after 1 sec. and “Ct” appears.r While pushing [FUNC], rotate [DIAL] to select a subaudibletone.• Each operating band and each memory channel have indepen-dent settings.t Push [V/M] to exit set mode.• Available subaudible tone frequencies (unit: Hz)òCONVENIENTStore subaudible tone frequencies and tone squelch ON/OFFsettings in memories for easy recall.Tone squelch is ON.Tone function set mode67.069.371.974.477.079.782.585.488.591.594.897.4100.0103.5107.2110.9114.8118.8123.0127.3131.8136.5141.3146.2151.4156.7159.8162.2165.5167.9171.3173.8177.3179.9183.5186.2189.9192.8196.6199.5203.5206.5210.7218.1225.7229.1233.6241.8250.3254.1