HXO D-Star Update 4-21-2012 W7AES Repeaters Mel Parrish with some content borrowed from K5TIT
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Transcript of HXO D-Star Update 4-21-2012 W7AES Repeaters Mel Parrish with some content borrowed from K5TIT
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HXO D-Star UpdateHXO D-Star Update4-21-20124-21-2012
W7AES RepeatersW7AES Repeaters
Mel ParrishMel Parrishwith some content borrowedwith some content borrowed
from K5TITfrom K5TIT
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AgendaAgenda
• Brief D-Star Overview (for newbies)
• Product Overview
• W7AES Status
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• Digital Smart Technology for Amateur Radio
• Initial Development– Japanese Amateur Radio League (JARL)– Icom
• Digital Voice & Data– Point-to-Point Simplex or– Duplex Repeaters– World Wide Call Sign and Repeater Routing– GPS Position Reporting
What is D-Star?What is D-Star?
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Radio/Repeater CharacteristicsRadio/Repeater Characteristics• 1.2 GHz “DD”
- 128 kbps Digital Data- Single Frequency Store-and-Forward Repeater
• VHF/UHF/1.2 GHz “DV”- Simplex Point-to-Point or via Duplex Repeater- Simultaneous Digital Voice & Data – 4800 bps
• 2400 bps Digital Voice• 1200 bps Forward Error Correction for Voice• 1200 bps Digital Data
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– Gaussian Minimum-Shift Keying (GMSK)
– Spectrum Efficiency• 6.25 kHz (-3 dB) Bandwidth• 10 kHz Channel Spacing Possible
RF CharacteristicsRF Characteristics
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Network CharacteristicsNetwork Characteristics
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Network RoutingNetwork Routing• Two Routing Methods
– Site Routing• Where you want to talk
–Specific System/Gateway and Port– User Routing
• Who you want to talk–Specific User
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Applications & ModesApplications & Modes
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• Advanced Multi-Band Excitation (AMBE)– Transform/Statistics-Based Algorithm– Multiple Frequency Bands (~20?), Analyzed for
“Voiced”/“Unvoiced”, Envelope, Pitch, then Encoded– Reduces Data Redundancy– Lower Data Rate than Basic A/D for
Equivalent Voice Quality
• 2/3 Rate Forward Error Correction (FEC) Coding– 2400 bps Voice Data– 1200 bps FEC Appended
Voice Digitization TechnologyVoice Digitization Technology
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Voice Digitization ProcessVoice Digitization Process
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DataRadio Header
Radio IDBit
Synchronization64 bits
FrameSync15 bits
Flag2
8 bits
Flag1
8 bits
Flag3
8 bitsP_FCS
This StationComment32 bits/4 char
DestinationRepeater Call
64 bits/8 char
LocalRepeater Call
64 bits/8 char
DestinationStation Call64 bits/8 char
ThisStation Call64 bits/8 char
W7SP B
W7SP A
CQCQCQ K7VE JOHN
Open DV ProtocolOpen DV Protocol
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Radio IDBit
Synchronization64 bits
FrameSync15 bits
Flag2
8 bits
Flag1
8 bits
Flag3
8 bitsP_FCS
This StationComment32 bits/4 char
DestinationRepeater Call
64 bits/8 char
LocalRepeater Call
64 bits/8 char
DestinationStation Call64 bits/8 char
ThisStation Call64 bits/8 char
W7SP B
W7SP A
CQCQCQ K7VE JOHN
Ethernet Style PacketRadio Header Length16 bits
Open DD ProtocolOpen DD Protocol
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Current Repeater/User StatsCurrent Repeater/User Stats• At Least 920 Icom G2 Gateways Worldwide
– G2 Gateway Routing SW Proprietary to JARL/Icom– 42 Countries– At Least 19,500 Gateway-Registered Users
• At Least 872 ircDDB Activated Gateways Worldwide– “internet relay chat Distributed Data Base”– Open Software– 20 Countries; Most Gateways in Germany– At Least 6,042 Users
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ReflectorsReflectors• Accessed Same as Gateways• At Least 50 Reflector Servers Activated• Affinity Groups:
– DX, Regional, Tech, Emcomm, etc.• Connection via Third-Party Software
– D-Plus (used on W7AES)– DCS– DExtra
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D-Star Radio ProductsD-Star Radio Products
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Icom D-STAR Controller & RepeatersIcom D-STAR Controller & Repeaters
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Typical “Full” Stack (like W7AES)Typical “Full” Stack (like W7AES)
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Icom D-Star Radio ProductsIcom D-Star Radio ProductsID-31A
IC-80ADIC-91ADIC-92AD
IC-9100
ID-880AH
ID-1
IC-2820AH
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IC-2820H GPS DisplayIC-2820H GPS Display
GPS DisplayGPS Display
Dual-bandDual-bandradio displayradio display
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Third Party ProductsThird Party Products
DVRPTR Open Source Hotspot ModemDVRPTR Open Source Hotspot Modem
DV Acccess Point (DVAP)DV Acccess Point (DVAP)(VHF Radio-to-Internet Interface)(VHF Radio-to-Internet Interface)
DV Dongle(No Radio Required)
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DV Dongle MenuDV Dongle Menu
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D-RATS Free Software D-RATS Free Software
A Communications Tool For D-STAR
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D-RATS Message List D-RATS Message List
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D-RATS Chat DisplayD-RATS Chat Display
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D-RATS File TransferD-RATS File Transfer
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D-RATS Map Display D-RATS Map Display
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D-RATS FormsD-RATS Forms
• Includes Form Editor to Includes Form Editor to Create Any FormCreate Any Form
• Only Data is SentOnly Data is Sent
• Fully printable ICS-213, ARRL Fully printable ICS-213, ARRL Radiogram and NTS Forms Radiogram and NTS Forms IncludedIncluded
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W7AES Arden Install StatusW7AES Arden Install Status
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Arden View from Ice BridgeArden View from Ice Bridge180 deg, centered north180 deg, centered north
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The Arden D-Star ParticipantsThe Arden D-Star Participants(so far)(so far)
Mel K6UV Gene KK4IB Frank N7ZEV
Ralph N7TND
Bill W7HMV
George KF2T
Not Shown:
Blayne KG7SSDale W7IXKJeff KR7JDLee N7LDNat W7OQF
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Some Useful Web SitesSome Useful Web Sites
www.icomamerica.com/support/forumswww.K5TIT.Org/Forum
Some D-STAR Web Sites:http://www.d-starusers.org/
http://www.d-rats.com/www.aprs-is.net/dstartnc2.htm