Introduction to D-STAR 2013 Amateur Radio Digital Modes for the 21 st Century. Philadelphia Digital Radio Association The K3PDR Digital Repeater System Jack Coupe – WA3BXH. PDRA Overview
Philadelphia Digital Radio Association
The K3PDR Digital Repeater SystemJack Coupe – WA3BXH
Formed in 2007. PDRA’s membership now includes over 30 amateurs who explore new digital radio modulation technologies to communicate both voice and data.
The club currently operates coordinated repeaters on 440/445.18125 mHz and 146.61/01. The repeater uses the D-Star format and is located at the Mermaid Lane tower in Wyndmoor, Montgomery County, PA at the Montgomery County/Philadelphia border. Tx-Rx antennas are shared with a commercial operation and UHF antennas are located near the top of the tower at approximately 550 feet agl, and over 900 feet amsl while the VHF is at 300 feet. We hope to establish 1.2 gHz. DD and DV links in the future as funds permit
The club supports many other amateur radio organizations to provide training and awareness of emerging digital modes as well as technical support to amateurs becoming involved with digital communications and strives to be the preeminent amateur organization promoting amateur digital radio operations.
440 mHz. Repeater Mobile Coverage Area
Throughout history Amateur Radio Operators have established a reputation for public service communications
And, for Disaster and Emergency a reputation for public service communicationsRelief Efforts…
D-STAR and Amateur Radio Operators can provide the “first” and “last” mile communications to enable an effective emergency response in Disaster communications
Amateur Radio operators can now put a reputation for public service communicationsD-STAR’s Hi-Speed data capabilities to work supporting their “served agencies” with IT tools they understand and expect…
File Transfer Graphics
Web browsing Maps
For EMCOMM Operations, D-STAR a reputation for public service communicationscan link Field Shelter and EOC Staff with Digital Data
D-STAR can a reputation for public service communicationsbridge the Gap in Disaster Communicationswith…..
Damage a reputation for public service communicationsAssessment
By utilizing D-Star’s High Speed Digital Data, public safety management members can see exactly what their in-the-field staff sees during windshield surveys, providing a useful tool for real-time on-scene visuals
Wide Area a reputation for public service communicationsNetworking
Compliments existing emergency management networks – covers miles and not just meters
Embedded Position information with links to Digital Maps, Charts and more
Shelter a reputation for public service communicationsManagement
D-Star enables shelters to share vital information digitally….
Visual Asset a reputation for public service communicationsTracking
D-STAR integrates GPS information automatically with normal Tactical Communications….
Position is included with every Voice transmission
Why is a reputation for public service communicationsD-STAR interesting?
Think of how these same D-Star features can be used in your other Amateur Radio communications support
D-STAR is now the fastest growing a reputation for public service communications
new technology in Amateur
D-Star History a reputation for public service communications
Typical D-STAR Configuration a reputation for public service communicationsGateway Overview
D-Star a reputation for public service communicationsSystemsTopography – Peer to Peer!
Four call signs used – You will see many examples a reputation for public service communications
MYCALL – Call sign of the originating station – your own call spec calls this “Own Callsign”
URCALL – Call sign of the desired target station, or CQCQCQ spec calls this the “Companion Callsign” – can be a port !
RPT1 – Call sign (& port) of the originating (input) repeater
spec calls this the “Departure Repeater Callsign”
RPT2 – Call sign & designator of the gateway (or cross band port)
spec calls this the “Destination Repeater Callsign”
(A bit misleading for Gateway calls)
Gateway Operations a reputation for public service communications
Not required for local use only
Contact your local repeater administrator to get registered :Philadelphia: Stan Hess N3KDA or Mike Campbell, KB3IKP
See K3PDR Yahoo Group files section for more information
No private conversations -
both ends hear all
User linking / routing vs. site linking
Not all users on site can participate - Opportunity for confusion!!!
Each User determines the route his transmission takes in system
Program Your Radio Ahead of time!
Multiple a reputation for public service communicationsWays to Traverse Gateway
“Follow-me Roaming” – Example: specific call to W3ZZZ
Sync Timing may cause delays when user switches (10 minutes typ)
Also, this type of call will typically interrupt an ongoing local QSO
Example - URCALL = ‘/K5TIT’
Specific routing of port call – defaults to Port ‘A’
Example – URCALL = ‘/K5TIT C’ be sure the C is in the 8th position
This type of call is “polite” to local QSOs. It will typically not interrupt
WWW.D-STARUSERS.ORG a reputation for public service communications
Questions a reputation for public service communications?Our sincere thanks to Ron Shaffer - W4VM and Bob Wiseman WB3W ARRL Section Emergency Coordinator for their permission to use some Power Point Slides and to Jim Moen – K6JM for his presentation on hot spots. Additionally to Pete Loveall- AE5PL of the Texas Interconnect Team, and our great friends Fred Varian – WD5ERD of the Texas Interconnect Team and Icom Support, Ray Nowack, Icom Amateur Products Manager and Brian Rode - NJ6N for help and support over the years.Online Discussion Forums
Other D-STAR Web Sites
http://groups.yahoo.com/group/k3pdr a reputation for public service communications
PDRA meetings are held on the 1st non-holiday Monday at Ambler Community Ambulance Association, 1414 E. Butler Pike, Ambler, PA. Meetings begin at 19:30 hours and generally last about 2 hours. All are welcome. A local net is held on non-meeting Monday evenings at 20:00 hours local. We also participate in the Mid-Atlantic Regional D-Star net on Tuesdays at 19:30 hours.