D-STAR
Digital - Smart Technologies for Amateur Radio
ON5VDK - 24/01/2009

Presentation
• D-Star?
• Signals / bandwidth
• QSO via D-STAR
• D-STAR + Computer
• Homebrew

D-Star?
• Digital voice and data protocol for radio
amateurs
• Development: Japan Amateur Radio League
• VHF, UHF, Microwave + Network (Internet)
• Simplex, Repeaters, Internet

Signals / Bandwidth
• 2 (sub) modes
• DV: Digital Voice
• DD: Digital Data

Digital Voice
• 3600 bps (2400 AMBE + 1200 Error corr.)
1200 bps data with voice (GPS info)
4800 bps Total - 6.25 khz

Digital Data
• 128 kbps Pure data (No Voice)
130 khz

QSO via D-Star
• Local via Repeater
ON0ULG B
UR: CQCQCQ
R1: ON0ULG B
R2: -
MY: ON5VDK
ON5VDK ON4LRG

UR, R1, R2, MY ?!?
• D-Star -> Call based routing
• UR= YOUR => remote station or CQ
(CQCQCQ)
• R1 => Repeater 1
• R2 => Repeater 2
• MY => My Call

QSO via D-Star
• Local via Repeater
ON0ULG B
UR: CQCQCQ
R1: ON0ULG B
R2: -
MY: ON5VDK
ON5VDK ON4LRG

QSO via D-STAR
• local via Repeater
& Internet
ON0ULG B
PH0K
UR: CQCQCQ
R1: ON0ULG B
R2: ON0ULG G
MY: ON5VDK
ON5VDK ON4LRG

QSO via D-STAR
• Repeater to
Repeater via
internet
ON0ULG B ON0CPS B
UR: ON4LRG
R1: ON0ULG B
R2: ON0ULG G
MY: ON5VDK
ON4LRG
ON5VDK

QSO via D-STAR
• Repeater to
Repeater via
internet
ON0CPS B
ON0ULG B
UR: /ON0CPSB
R1: ON0ULG B
R2: ON0ULG G
MY: ON5VDK
ON5VDK ON4LRG

QSO via D-STAR
• Linking repeaters
ON0ULG B ON0CPS B
UR: ON0CPSBL
R1: ON0ULG B
R2: ON0ULG G
MY: ON5VDK
ON5VDK ON4LRG

QSO via D-STAR
• Unlinking
repeaters
ON0ULG B ON0CPS B
UR: ON0CPSBU
R1: ON0ULG B
R2: ON0ULG G
MY: ON5VDK
• DON’T FORGET!
ON5VDK ON4LRG

QSO via D-STAR
• Linking Reflector
ON0ULG B ON0CPS B
UR: REF005BL
R1: ON0ULG B
R2: ON0ULG G
MY: ON5VDK
ON5VDK ON4LRG

QSO via D-STAR
• Unlinking
repeaters
ON0ULG B ON0CPS B
UR: * * * * * * * U
R1: ON0ULG B
R2: ON0ULG G
MY: ON5VDK
• DON’T FORGET!
ON5VDK ON4LRG

D-STAR + Computer
• dChat
• D-Rats
• D-Star Comms
• DV-Dongle

DV Dongle
AMBE Chip via USB
Java
Compatible
Windows, Mac OSX
en Linux

D-Star + Internet
• D-Star Users
http://www.dstarusers.org/
• D-Star Info
http://www.dstarinfo.com/
• www.dstar.be ?

Homebrew
• DV Adapter (UT-118)
http://d-star.dyndns.org/
• Based on UT-118
• DVX Project
http://www.moetronix.com/dstar/
• Based on AMBE chip
• DV Dongle
http://www.moetronix.com/dvdongle/
http://www.dvdongle.com/

on5vdk@uba.be