1 / 16

D-STAR Digital Smart Technology for Amateur Radio

D-STAR Digital Smart Technology for Amateur Radio. Don Hinsman – N4VIP Alden Oyer – AG5S Alan Hill – N5BGC Ed James – KA8JMW. What is D-STAR?. D-STAR is an open standard for digital voice and data on Amateur Radio Developed by Japan Amateur Radio League (JARL)

kemal
Download Presentation

D-STAR Digital Smart Technology for Amateur Radio

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. D-STARDigital Smart Technology for Amateur Radio Don Hinsman – N4VIP Alden Oyer – AG5S Alan Hill – N5BGC Ed James – KA8JMW

  2. What is D-STAR? • D-STAR is an open standard for digital voice and data on Amateur Radio • Developed by Japan Amateur Radio League (JARL) • Uses AMBE vocoder chip from DVSI (only proprietary part in D-Star) • Icom is first manufacturer with base, mobile, handhelds and repeater equipment (non-proprietary)

  3. How does D-STAR work? • Voice is converted to digital modulation and transmitted at 4800 bps • 2400 bits for voice • 1200 bits for Forward Error Correction on voice • 1200 bits for data • Voice and data occupy one 6.25 KHz signal (versus 12.5 KHz FM voice, P25, NXDN and MotoTRBO) • Can operate simplex, repeater or linked to other repeater(s)

  4. What can D-STAR Do? • Transmit or receive voice and 1200 baud data simultaneously on 2m, 440 and 1.2 GHz (no TNC required) • 128 Kb data transmission on 1.2 GHz with Internet connectivity (Ethernet bridge to Internet with IP address) • D-PRS (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 (57 now in operation worldwide) • DV Dongle and DV Access Point (DVAP) allow voice and data access to D-STAR via Internet connection (similar to EchoLink)

  5. D-STAR Continues to Grow • As of October 20, 2012 – 987 Gateways, ~2,072 Repeaters and 24,630 registered users Users 5

  6. D-STAR Reflectors and Nets • 57 reflectors available worldwide to act as “conference bridges” linking multiple repeaters, Dongle, DVAP, hotspot users • Each reflector has four separate modules for independent conference bridges (A, B, C, D) and echo function (E) • Many use module D exclusively for data functions • 52 regional, national and international nets established through reflectors • Linking repeaters to reflectors allows local users to participate with no special programming • View repeaters and users connected to reflectors (http://refnumber.dstargateway.org/status.html) • Complete Net listing on www.DSTARinfo.com 6

  7. Typical D-Star Handheld (ID-31A) • UHF (analog FM, Digital Voice), 5W • GPS receiver • Global D-Star repeater list pre-programmed • microSD card • 1252 Memory channels, all NM FM & all Southwest D-Star repeaters

  8. D-Star demonstration • FM – simplex and repeater (442.825 MHz) • Digital voice – simplex and repeater (442. MHz) • Echo • Linked (through W5PMZ to W5SF) • DV Dongle, Acces Point and Node Adapters (KA8JMW)

  9. DV Dongle, Access Point and Node Adapters Dongle provides access to D-STAR repeaters via PC without radio Access Point creates instant local access point for limited area without D-STAR repeater Node Adapter provides D-STAR interface to FM radio and can be used to create hotspot or repeater

  10. EmComm operation • Quickly setup linked repeaters building ad-hoc networks • Without Internet, repeater still provides expanded voice/data features • Without repeater, simplex operation still provides expanded capabilities

  11. D-RATS By Dan Smith - KK7DS

  12. OVERVIEW Chat FTP style file transfers Messaging including E-mail APRS like mapping

  13. Chat • Free-form multicast chat messages • Checksum-protected • No ACK/NAK from remote stations (yet) • Channels and “private” chat • Automated QSTs • Quick messages‏

  14. Messaging • Email gateway • SMTP for outgoing emails • Rich forms go as HTML emails • POP3 gateway for remote mail checks • WL2K gateway • Any internet-connected station can gateway • Experimental RMS packet client • Seamless and bi-directional • SMTP/POP3 servers integrated • Paclink-like functionality

  15. File transfer

  16. Ratflector • Connect to other D-RATS users via Internet • Easy and clean for testing • Data-only reflector • Configure D-RATS radio port for one of: • Network port on ref.d-rats.com, port 9000 • Network port on ref.d-rats.com, port 9001 • User-run ratflectors too! Included in download

More Related