copyright © 2006 – pete loveall ae5pl digital radio for the last mile last 30 miles digital...
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Copyright © 2006 – Pete Loveall AE5PL
Digital Radiofor the
Last MileLast 30 Miles
Digital Amateur Radio
vs.
WiFi
Copyright © 2006 – Pete Loveall AE5PL
Agenda
• Introduction• Recent Disaster EmComm• Digital Technology in Amateur Radio• D-STAR Technology• High Speed (IP) Connectivity• Low Speed (Serial) Connectivity• Voice• EmComm Requirements• Sample Scenario• Summary
Copyright © 2006 – Pete Loveall AE5PL
Recent Amateur Radio EmComm
• 9/11
• Tsunami
• Hurricanes
• Tornados
• Floods
• Earthquakes
Copyright © 2006 – Pete Loveall AE5PL
Why Amateur Radio?
• Primary Communications Infrastructure Overloaded or Destroyed
• Large Pool of Trained Communicators
• Equipment Not Reliant Upon Existing Infrastructure
• Frequency Agile
Copyright © 2006 – Pete Loveall AE5PL
Primary Modes Used
• VOICE
• Winlink
• Packet
• CW
Copyright © 2006 – Pete Loveall AE5PL
What’s Missing?
• Reliable, Usable Data
Copyright © 2006 – Pete Loveall AE5PL
Is Data Important?
• Does FEMA Use Forms?
• Does the Red Cross Use Forms?
• Do 99.999% of Served Agencies Use Forms?
• Which is More Accurate: Voice or Data?
Copyright © 2006 – Pete Loveall AE5PL
Is Voice Obsolete?
• No
• Tactical Commands
• Real Time Narrative
• Real Time Status
Copyright © 2006 – Pete Loveall AE5PL
D-STAR
• Digital –Smart Technology for Amateur Radio
• Developed by JARL
• Open Protocol Specification
• Digital Voice
• Digital Data
Copyright © 2006 – Pete Loveall AE5PL
D-STAR High Speed Data
• 1.2 GHz
• 128 Kbps (150 KHz BW)
• IP
• Ethernet Connection
• Internet Capable
Copyright © 2006 – Pete Loveall AE5PL
High Speed Data
Copyright © 2006 – Pete Loveall AE5PL
D-STAR vs. WiFi
• 128 Kbps• 15-20 Mile Range• Omni-directional
Antennas for Range
• 10 Mbps• 1-2 Mile Range• Directional Antennas
for Extended Range
Copyright © 2006 – Pete Loveall AE5PL
D-STAR Voice/LS Data
• 144 MHz, 440 MHz, 1.2 GHz
• 4800 bps (6 KHz BW)
• 3600 bps AMBE Voice (EC)
• 1200 bps Data
• 3 Wire RS-232 or USB 1.0
• GPS Capable
Copyright © 2006 – Pete Loveall AE5PL
Digital Voice/Low Speed Data
Copyright © 2006 – Pete Loveall AE5PL
DV vs. AV
• Combined Voice/Data• 6 KHz Bandwidth• Error Correction• Greater Range
• Voice & Data on Separate Channels
• 12 KHz Bandwidth• Weak Signal Noise
Copyright © 2006 – Pete Loveall AE5PL
D-STAR Applications
• D-PRS– Icom GPS & APRS
• Remote Internet
• Simultaneous Voice & Data
• Simultaneous Voice & GPS Data
Copyright © 2006 – Pete Loveall AE5PL
EmComm Requirements
• Rapid Deployment
• Minimal Learning Curve
• Remote Connectivity
• Minimal Infrastructure
• High Accuracy
• Immediate Response
Copyright © 2006 – Pete Loveall AE5PL
Sample Scenario
• Katrina Aftermath– Infrastructure Destroyed or Ineffective– Command and Control Destroyed or
Significantly Reduced– SAR Efforts Required– Shelters Deployed Throughout– Logistical Support Required
Copyright © 2006 – Pete Loveall AE5PL
Primary Communications(Non-Amateur Radio)
• Satellite Voice
• Satellite IP
• Direct VHF/UHF Agency Communications
Copyright © 2006 – Pete Loveall AE5PL
Amateur Radio Requirements
• Rapid Deployment
• Trained Communicators
• Radios Compatible with Temporary Infrastructure
• Large Area Coverage
• Voice/Data/IP
Copyright © 2006 – Pete Loveall AE5PL
Amateur Radio Requirements
• Rapid Deployment– D-STAR Go Kits
• Trained Communicators– Amateur Radio Operators
• Radios Compatible with Temporary Infrastructure– D-STAR High Speed Connectivity with Satellite– D-STAR Low Speed Connectivity (including Voice) with Satellite
• Large Area Coverage– 10-30 Mile Radius
• Voice/Data/IP– D-STAR DV on single channel– D-STAR High Speed IP
Copyright © 2006 – Pete Loveall AE5PL
High Speed Data
Copyright © 2006 – Pete Loveall AE5PL
Digital Voice/Low Speed Data
Copyright © 2006 – Pete Loveall AE5PL
Sample EOC or Shelter
Icom ID-1
WiFi
D-PRS
Copyright © 2006 – Pete Loveall AE5PL
SAR Participant
D-PRS
DV
Copyright © 2006 – Pete Loveall AE5PL
“Central” High Point
Router
Data Repeater Voice Repeater
Gateway Server
Controller
Satellite Uplink/Downlink
Go Kit
Copyright © 2006 – Pete Loveall AE5PL
Summary
• Single Channel Voice & Data
• Wide Area
• Rapid Deployment
• Extensive Data Support
• Automatic Report & GPS Correlation
• Simple Equipment Configuration
Copyright © 2006 – Pete Loveall AE5PL
Q&A
• Pete Loveall AE5PL– pete@ae5pl.net– www.ae5pl.net
• Texas Interconnect Team– www.k5tit.org
• Icom America– www.icomamerica.com/dstar
• ARRL– www.arrl.org
• JARL– www.jarl.or.jp
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