Icom IC-T7H Instruction Manual

Also see for IC-T7H: Instruction manual Service manual

4ADVANCED FUNCTIONS21D Setting subaudible tones fortone squelch operation (CTCSS tones)Separate tone frequencies can be set for tone squelch oper-ation than for repeater operation (the same range of tones isavailable—see below). Like repeater tones, these are set inset mode.➀ Select VFO or a memory channel.➁ Push [(H/L)SET] for 1 sec. to enterset mode.➂ Push [TONE] or [H/L] one or moretimes until “CT” appears.➃ Rotate [DIAL] to select the desiredsubaudible tone.➄ Push [(VFO) CLR] to exit set mode.• Available subaudible tone frequencies (unit: Hz) Subaudible tone operationD Tone squelch 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.➀ Set the operating frequency.➁ Set the desired subaudible tone in set mode.• See right for programming.➂ Push [TONE] one or more times until “TSQL” appears.➃ 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 [MONI].➄ Operate the transceiver in the normal way.➅ To cancel the tone squelch, push [TONE].✔ CONVENIENTStore subaudible tone frequencies and tone squelchON/OFF settings in memories (call) for easy recall.TTSQLSQLNOTE: The transceiver has 50 tone frequencies and con-sequently their spacing is narrow compared with unitshaving 38 tones. Therefore, some tone frequencies mayreceive interference from adjacent tone frequencies.67.0 79.7 94.8 110.9 131.8 156.7 171.3 186.2 203.5 229.169.3 82.5 97.4 114.8 136.5 159.8 173.8 189.9 206.5 233.671.9 85.4 100.0 118.8 141.3 162.2 177.3 192.8 210.7 241.874.4 88.5 103.5 123.0 146.2 165.5 179.9 196.6 218.1 250.377.0 91.5 107.2 127.3 151.4 167.9 183.5 199.5 225.7 254.1USING SET MODE