What is D-Star
D-STAR (Digital Smart Technology for Amateur Radio) is
an exciting new form of Amateur Radio that compliments other parts of the hobby
including VHF, HF operation, Contesting and Satellite communications etc.
Utilising digital communication and the Internet, D-STAR allows you to
communicate worldwide with other operators who are connected to D-STAR*
repeaters.
http://m.youtube.com/#/watch?v=ZMMt55Dtp5Qhttp://www.youtube.com/user/IcomAmericaInc
An Overview
D-STAR* (Digital Smart Technology for
Amateur Radio), a standard published in 2001, is the result of years of
research funded by the Japanese government and administered by the JARL to
investigate digital technologies for amateur radio. D-STAR* is an open protocol
- published by JARL, it is available to be implemented by anyone. Whilst Icom
is the only company to date that manufactures D-STAR* compatible radios, any
equipment or software that supports the D-STAR* protocol will work with a
D-STAR* system.
In a D-STAR* system, the air link portion of the
protocol applies to signals travelling directly between radios or between
radios via a repeater. D-STAR* radios can talk directly to each other without
any intermediate equipment or through a repeater using D-STAR* voice or data
transceivers.
The gateway portion of the protocol applies to the
digital interface between D-STAR* repeaters. D-STAR* also specifies how a voice
signal is converted to and from the stream of digital data. The D-STAR* codec
is known as AMBE® (Advanced Multiband Excitation) and the voice signal is
transmitted in the D-STAR* system at 3600 bits/second (3.6 kbps).
D-Star* Digital Voice and Digital Data
The D-STAR* system supports two types
of digital data streams. The Digital Voice (DV) stream used for example on
430-440 MHz contains both digitised voice (3600 bps including error correction)
and digital data (1200 bps). Using a DV radio is like having both a packet link
and FM voice operating simultaneously. The Digital Data (DD) stream, used only
on 1.2 GHz, is entirely data with a bit rate of 128k bps. The data connection
to a radio that uses DV is via an RS-232 interface or USB 1.0. An Ethernet
connection is used for high-speed DD D-STAR data. Ordinary terminal emulation
software (DV) or a Web browser (DD) will be sufficient for exchanging
data.
D-STAR (Digital Smart Technology for Amateur Radio) is
an exciting new form of Amateur Radio that compliments other parts of the hobby
including VHF, HF operation, Contesting and Satellite communications etc.
Utilising digital communication and the Internet, D-STAR allows you to
communicate worldwide with other operators who are connected to D-STAR*
repeaters.
http://m.youtube.com/#/watch?v=ZMMt55Dtp5Qhttp://www.youtube.com/user/IcomAmericaInc
An Overview
D-STAR* (Digital Smart Technology for
Amateur Radio), a standard published in 2001, is the result of years of
research funded by the Japanese government and administered by the JARL to
investigate digital technologies for amateur radio. D-STAR* is an open protocol
- published by JARL, it is available to be implemented by anyone. Whilst Icom
is the only company to date that manufactures D-STAR* compatible radios, any
equipment or software that supports the D-STAR* protocol will work with a
D-STAR* system.
In a D-STAR* system, the air link portion of the
protocol applies to signals travelling directly between radios or between
radios via a repeater. D-STAR* radios can talk directly to each other without
any intermediate equipment or through a repeater using D-STAR* voice or data
transceivers.
The gateway portion of the protocol applies to the
digital interface between D-STAR* repeaters. D-STAR* also specifies how a voice
signal is converted to and from the stream of digital data. The D-STAR* codec
is known as AMBE® (Advanced Multiband Excitation) and the voice signal is
transmitted in the D-STAR* system at 3600 bits/second (3.6 kbps).
D-Star* Digital Voice and Digital Data
The D-STAR* system supports two types
of digital data streams. The Digital Voice (DV) stream used for example on
430-440 MHz contains both digitised voice (3600 bps including error correction)
and digital data (1200 bps). Using a DV radio is like having both a packet link
and FM voice operating simultaneously. The Digital Data (DD) stream, used only
on 1.2 GHz, is entirely data with a bit rate of 128k bps. The data connection
to a radio that uses DV is via an RS-232 interface or USB 1.0. An Ethernet
connection is used for high-speed DD D-STAR data. Ordinary terminal emulation
software (DV) or a Web browser (DD) will be sufficient for exchanging
data.