DSTAR Presentation

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D-STAR 06Amateur Digital Modefor the 21st
Century
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• D-STAR is not necessarily what we expect
• Forget everything you think you know about
  repeaters.
• Forget everything you think you know about
  networking.
• Existing knowledge will help, IF you can ignore
  assumptions!

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• What is D-STAR?
• Why is D-STAR interesting?
• Who is interested?
• How will it be used?
• How do we get started?
• Open Discussion

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• What is D-STAR?
• Digital Smart Technology for Amateur Radio
• JARL
• Japanese Amateur Radio League
• NOT Manufacturers!
• Goal
• Advancement of the hobby
• Spectrum Efficiency
• Experiment with Simultaneous Voice and Data
• D-STAR Gateway owned by Icom
• Not Public Domain or Open Source
• May not be copied, shared or redistributed

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• Why is D-STAR interesting?
• Spectral Efficiency
• Simultaneous Voice and Data capability
• 2m/70cm/23cm
• High-Speed Data capability
• 23cm
• Internet Linking capability
• Microwave Linking capability

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• Why is D-STAR interesting?
• Spectral Efficiency
• 6.25 kHz emission
• 10 kHz channel spacing (reasonable)
• More efficient use of available bandwidth
• Allows more channels in crowded spectrum
• Better performance compared to analog FM
• Same power in less bandwidth (SSB vs. AM)

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• Why is D-STAR interesting?
• Simultaneous Voice and Data capability
• 2m, 70cm, 23cm Digital Voice Mode
• 4800bd Data Stream
• 2400bd Digital Voice
• 1200bd FEC on Digital voice
• 1200bd Serial Data

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• Why is D-STAR interesting?
• High-Speed Data capability
• 23cm
• 128kb Ethernet
• Transparent Bridge
• Allows Network-Agnostic Applications!
• Half-Duplex
• Duplex-sensitive apps dont work well (VOIP, etc.)

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• Why is D-STAR interesting?
• Internet Linking capability
• User linking vs. Site linking
• Can cause confusion for uninformed
• Allows roaming

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D-STAR Gateway Functions

• Authentication/Authorization
• Register locally, propagates throughout the
  network
• Without authentication, no traffic crosses
  Gateway
• Call Routing (Source Routed)
• Allows D-STAR communication, wherever you are
• Some interesting challenges based on sync timing

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• Who is interested? (US)
• Individuals
• Clubs
• Served Agencies
• Examples
• Races/Runs/Rides, Parades, Special Events
• Emergency Communications
• FEMA Demo

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• Legend
• Full
• Full/Portable
• 70cm
• 23cm
• Unknown

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• Legend
• Full
• Full/Portable
• 70cm
• 23cm
• Unknown

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International Systems

• Buenos Aires, Argentina
• Sao Paulo, Brazil
• Mexico City, Mexico

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• How will it be used?
• Regular use, like FM (Enhanced)
• Data/Voice Simultaneously
• Internet Linking
• Emergency Communications
• New Applications
• Applications are the BIG DEAL
• Packet
• DX Clusters
• APRS

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EmComm Applications

• Ends needless chatter
• Data rather than voice
• Immediate identification
• Callsign
• GPS Coordinates
• Dispatch assets accurately

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• New Applications
• Hardware
• µSmartDigi D-Gate
• Software
• D-STAR Monitor
• D-STAR TNC
• D-STARLet

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• Fits inside a TNC-X box
• Converts D-STAR NMEA GPS data to Base-91
  compressed APRS Position Reports
• Converts Symbol and Text Data
• Filters messages according to a
• rich set of user-configurable rules
• Operates without a dedicated laptop or PC

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µSmartDigi D-Gate

• Black box translator
• D-PRS to APRS
• APRS to D-PRS
• Smooth RF integration of both systems

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D-STAR Monitor

• Server based software package
• Drives www.dstarusers.org website
• K5TIT Creators
• Pete Loveall AE5PL
• Gerry Dalton W5MAY
• Additional Stats for SYSOP

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WWW.D-STARUSERS.ORG
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D-STAR TNC

• An APRS and D-STAR software bridge
• Java Based package
• www.aprs-is.net/dstartnc2.htm
• DStarTNC2 is free for use by Amateur Radio
  operators for Amateur Radio. 

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D-STARLet

• A Web-based text messaging application
• Uses D-STAR Digital technology
• Dean Gibson, AE7Q
• www.dstarlet.com

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• How do we get started?
• Lots of interest beginning around the US and
  Canada
• VHF, UHF SHF radios currently available
• Mobiles
• Handhelds (On VHF UHF Only)
• Repeaters components available
• ID-RP2000V for 2m voice and low-speed data
• ID-RP4000V for 70cm voice and low-speed data
• ID-RP2V for 23 cm voice and low-speed data
• ID-RP2D for 23 cm high-speed data
• ID-RP2C Controller (Required)

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Online Discussion Forums

• www.icomamerica.com/support/forums
• www.K5TIT.Org/Forum
• Other D-STAR Web Sites
• www.D-STARUsers.Org
• www.D-STARlet.Com
• www.aprs-is.net/dstartnc2.htm

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• Questions Discussion