Icom IC-92AD Instruction Manual - Page 48

7 DV MODE OPERATION ■ About the D-STAR system In the D-STAR system, repeater linking via a 10 GHz band backbone and internet network (gateway connection) capabilities are available. This system provides you with much wider coverage range during digital voice mode operation. • D-STAR system outline Repeater A 440 MHz Station A 10 GHz Repeater B Internet network 440 MHz Station B For current repeater operation, stations that are communicating must both be in the same repeater's operating area. However, in the D-STAR system as in the illustration at left, the repeaters can be linked via the system repeaters (with a 10 GHz signal). Thus stations A and B can communicate even though they are in different repeater operating areas. Also, the D-STAR system repeaters are connectable through the internet- gateway connection capability. For example, when station B uses the gateway connection station B can communicate with the station C! By using the gateway connection, long distance communication like DX operation may be possible with 144 or 440 MHz digital voice! In the D-STAR system, an independent repeater's operating area is called an Area and a group that of linked repeaters via a 10 GHz backbone is called a Zone. Repeater C 440 MHz 10 GHz Repeater D 440 MHz Station C 40 Station D About time-out timer function The IC-92AD has a time-out timer function for digital repeater operation. The timer limits a continuous transmission for approx. 10 min. Warning beeps will sound before 30 sec. (approx.) and just before the timer functioning.