Transcript D-STAR Operation and Programming

D-STAR
Digital Smart Technology for
Amateur Radio
John Davis - WB4QDX
GA ARES District Emergency Coordinator – Georgia Public Broadcasting
ARES Emergency Coordinator – Gwinnett County, Georgia
[email protected]
What is D-STAR?
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D-STAR is an open worldwide
standard for digital
communications over Amateur
Radio
The D-STAR standard was
developed by the Japan
Amateur Radio League (JARL)
D-STAR uses the AMBE vocoder
chip under license from DVSI
Icom is initial Amateur Radio
manufacturer of mobiles, HTs,
repeaters and controllers
Non-Icom repeater in operation
in UK
How D-STAR Works
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D-STAR is digital modulation
Voice is converted from analog to
digital for transmission
Data is combined with digitized
voice for transmission at 4800 bps
• 2400 bits for Voice
• 1200 bits for Forward Error Correction
• 1200 bits for Data
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Callsign is sent with each
transmission
Calls are routed by callsign
What can D-STAR Do?
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Transmit and receive voice and 1200 baud data
simultaneously on 2m, 440 and 1.2 GHz
128 Kb data transmission on 1.2 GHz with Internet
connectivity (Ethernet bridge to Internet with IP address)
DPRS (digital APRS) automatic position reporting
simultaneous with voice with GPS
Flexible repeater linking with Gateway and Internet
connection
Reflectors act as conference bridge for linking multiple
repeaters (30 in operation worldwide)
Connect to other station regardless of location (callsign
routing)
D-STAR Linked QSO
I'm near Lawrenceville,
GA. I'm talking on
WD4STR (port B) as
well as the K4WAK
repeater (port B) and
my radio is set to
I'm near Tallahassee
FL and I'm listening to
the K4WAK repeater
and my radio is set to
443.95000 +5.000
440.55000 +5.000 Mhz
User on Repeater 1 LINKS to USER on Repeater 2
Mhz
D-STAR Growth
D-STAR Registered
Users
D-STAR Systems
600
12000
500
10000
400
8000
300
6000
200
4000
100
2000
0
0
One Year Ago
Today
One Year Ago
Today
Open Development
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DV Dongle
(www.dvdongle.com)
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Access to D-STAR repeaters via PC without radio
Small module connects to PC via USB
Uses PC sound card for mic/speaker audio
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Hotspot
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(www.w9arp.com/hotspot/)
Uses GMSK node adapter from Satoshi Yasuda
(d-star.dyndns.org/rig.html.en)
Connects to 9600 baud packet data port or
discriminator of FM radio
GB7MH Repeater
(g4ulf.blogspot.com)
Uses GMSK node adapter on Tait T800 repeater
Fully tested with US Trust Servers
Compatible with all Dplus, DSTARMON, other
repeater utilities
New Products Coming
(stay tuned today!)
D-STAR Across America
For latest worldwide repeater listings –
www.dstarinfo.com/repeaters
D-STAR for EmComm
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Stations can transmit voice and
location info simultaneously
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Low and high speed data transfer
capability
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Internet access through Gatewayequipped repeaters
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Communicate with stations
regardless of location (routing by
callsign)
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Versatile repeater linking on the
fly
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Repeaters can be connected to
reflectors
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Link across states, across the
nation, around the world
Typical D-STAR Repeater Stack
A Regional Approach to
Communications
Severe weather approaches Southeast from west,
south (Gulf of Mexico), and southeast (Atlantic coast)
Statewide D-STAR network in
operation in Alabama, 33 county
EMA offices added D-STAR radios
North Carolina D-STAR
repeater network growing
rapidly
South Carolina planning DSTAR overlay of FM linked
repeater network
Georgia building statewide
D-STAR network using
Public Television towers
Rapid growth of D-STAR
repeaters across North and
Central Florida
Georgia ARES D-STAR
Network
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Statewide D-STAR network
coverage planned using GPB
television towers
Antennas, transmission lines,
building space, protected power and
network connectivity provided by
GPB
Antennas at >500’ AGL provides
statewide coverage
12 repeaters currently operational
growing to 19+ with GPB network
Georgia ARES received $165,000
in Federal funding to complete
Georgia statewide network, equip
20 EMA offices
Georgia ARES D-STAR
Network
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Statewide D-STAR network
coverage planned using GPB
television towers
Antennas, transmission lines,
building space, protected power and
network connectivity provided by
GPB
Antennas at >500’ AGL provides
statewide coverage
12 repeaters currently operational
growing to 19+ with GPB network
Georgia ARES received $165,000
in Federal funding to complete
Georgia statewide network, equip
20 EMA offices
D-STAR Reflectors
and Nets
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30 reflectors available worldwide to act as “conference
bridges” linking multiple repeaters, Dongle users
Regional, national and international nets possible with
reflectors (over 37 listed on www.dstarinfo.com)
Linking repeaters to reflectors allows local users to
participate with no special programming
View repeaters/Dongle users connected to reflectors
(http://refnumber.dstargateway.org/status.html)
Southeast D-STAR Weather Net on Sunday nights, 9:00pm
ET on Reflector 2A (REF002A)
Complete Net listing on www.DSTARinfo.com/reflectors
D-STAR Resources
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View local repeater linked connections, Dongle users, local
last heard list at https://callsign.dstargateway.org/status.html
D-STAR Info Newsletter – published quarterly, available in
print or download on Web (Latest issue available here!)
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Great D-STAR website, last heard list - www.dstarusers.org
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D-STAR info and calculator – www.dstarinfo.com
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Icom Support Forums
www.icomamerica.com/en/support/forums
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DV Dongle Info – www.dvdongle.com
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Hotspot– www.w9arp.com/hotspot
Southeast D-STAR
Resources
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Florida D-STAR website – www.Florida-DStar.info
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North Florida D-STAR Yahoo Group
groups.yahoo.com/NorthFloridaD-Star
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Alabama D-STAR Yahoo Group - groups.yahoo.com/al-dstar
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Georgia D-STAR Yahoo Group - groups.yahoo.com/ga_dstar
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South Carolina D-STAR website – www.scdstar.com
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General D-STAR Yahoo Group groups.yahoo.com/dstar_digital
Questions?