D-Star Presentation, Liege, 24th of January 2009

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D-STAR is a digital voice and data protocol for amateur radio developed by the Japan Amateur Radio League. It uses 2 modes - digital voice (DV) at 3600 bps and digital data (DD) at 128 kbps. DV has a total bandwidth of 6.25 kHz while DD uses 130 kHz. D-STAR allows local and long distance communication via repeaters and the internet. It uses a calling system to route communications between stations and repeaters. Various homebrew and commercial devices exist to allow interfacing D-STAR with computers over the internet.

Technology

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
& 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/

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D-Star Presentation, Liege, 24th of January 2009

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

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

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

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

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

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

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

8. 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

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

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

11. 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

12. 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

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

14. 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

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

16. 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

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

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

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

20. 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/

21. on5vdk@uba.be

D-Star Presentation, Liege, 24th of January 2009

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