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
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
AgendaAgenda
• Brief D-Star Overview (for newbies)
• Product Overview
• W7AES Status
• 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?
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
– Gaussian Minimum-Shift Keying (GMSK)
– Spectrum Efficiency• 6.25 kHz (-3 dB) Bandwidth• 10 kHz Channel Spacing Possible
RF CharacteristicsRF Characteristics
Network CharacteristicsNetwork Characteristics
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
Applications & ModesApplications & Modes
• 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
Voice Digitization ProcessVoice Digitization Process
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
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
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
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
D-Star Radio ProductsD-Star Radio Products
Icom D-STAR Controller & RepeatersIcom D-STAR Controller & Repeaters
Typical “Full” Stack (like W7AES)Typical “Full” Stack (like W7AES)
Icom D-Star Radio ProductsIcom D-Star Radio ProductsID-31A
IC-80ADIC-91ADIC-92AD
IC-9100
ID-880AH
ID-1
IC-2820AH
IC-2820H GPS DisplayIC-2820H GPS Display
GPS DisplayGPS Display
Dual-bandDual-bandradio displayradio display
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)
DV Dongle MenuDV Dongle Menu
D-RATS Free Software D-RATS Free Software
A Communications Tool For D-STAR
D-RATS Message List D-RATS Message List
D-RATS Chat DisplayD-RATS Chat Display
D-RATS File TransferD-RATS File Transfer
D-RATS Map Display D-RATS Map Display
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
W7AES Arden Install StatusW7AES Arden Install Status
Arden View from Ice BridgeArden View from Ice Bridge180 deg, centered north180 deg, centered north
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
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