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DV MODE PROGRAMMING
6
N About the D-STAR system
In the D-STAR (Digital Smart Technologies for Amateur
Radio) system, repeater linking via a 10 GHz backbone and/
or internet gateway provides you with much wider coverage
range during digital voice mode operation.
• D-STAR system outline
Station A
Station C
Station D
Repeater A
Repeater D
440 MHz
440 MHz
Repeater C
10 GHz
Zone
Zone
Area
Station B
Repeater B
10 GHz
440 MHz
440 MHz
Internet
network
Internet
network
In traditional repeater operation, stations that are communi-
cating must both be in the repeater's operating area. However,
D-STAR repeaters can be linked via a 10 GHz backbone, as
shown in the illustration at left. Using D-STAR, stations A and
B can communicate even though they are in widely separated
repeater operating areas.
Furthermore, D-STAR repeaters can be linkled through an
internet gateway, which can extend the communication range
dramatically. For example, when station B uses the internet
gateway connection, it can communicate with station C even
though they are thousands of miles apart! By using the gate-
way connection, long distance communication is possible
using 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.
About time-out timer function
The IC-80AD has a time-out timer function for digital re-
peater operation. The timer limits a continuous transmis-
sion to approx. 10 min. Warning beeps will sound approx.
30 sec. before time-out and then again immediately before
time-out.
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