What Is D-Star - Icom D-STAR ID-4100A Manual

■ What is D-STAR?

• D-STAR is a digital protocol standard developed by JARL
(Japan Amateur Radio League). The system includes the
DV mode for Digital Voice and the DD mode for Digital
Data communications.
• D-STAR supports a comprehensive repeater system linked
through the Internet, enabling you to make QSOs with
stations near or far from your location.
Advanced Amateur radio technology of D-STAR
The DV mode has a bandwidth of only
6.25 kHz, compared to 16 kHz for the
analog FM mode, with 5 kHz deviation
that already meets any future narrow
band plan. D-STAR utilizes the well-
know GMSK modulation method that
makes very efficient use of occupied
bandwidth.
• D-STAR supports the DV mode at 4.8 kbps and your call
sign, along with either a short message, or GPS data, can
also be transmitted simultaneously with your voice audio.
D-STAR (F7W)
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Frequency
6 kHz 6 kHz
10 kHz 10 kHz 10 kHz 10 kHz 10 kHz 10 kHz
20 kHz 20 kHz 20 kHz 20 kHz
D-STAR operates in 10 kHz steps. The sound
quality is good, even though the bandwidth is
half of regular FM mode signals.
FM (F3E)
10 kHz 10 kHz 10 kHz 10 kHz
20 kHz 20 kHz
The regular FM mode occupies 20 kHz
that is a double the bandwidth of D-STAR.
INTRODUCTION
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Frequency
16 kHz 16 kHz
10 kHz 10 kHz 10 kHz 10 kHz 10 kHz 10 kHz
20 kHz 20 kHz
D-STAR GUIDE
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