DPRS = APRS + D-Star
by VA3YH
Ottawa D-STAR Symposium
November 27, 2010
DPRS
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D-star Position Reporting System
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APRS = GPS - TNC - Radio
D-PRS = GPS - Dstar radio
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DPRS
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DV - 4800 bps
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AMBE encoding = 2400 bps + FEC 1200 bps
1200 bps for synchronization and multi use
( Approx 900 bps is available for general use)
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DPRS
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Utilize the slow speed data channel to send
GPS data to the Gateway.
ICOM radio converting GPS information to
TNC2 fomatted APRS strings
Format
Icom introduced a new GPS mode called GPSA mode which is shorter in format and includes
a CRC.
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DPRS Gateway
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running javAPRSSrvr
report GPS info to aprs.fi
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DPRS re-transmission in RF ( 2 M)
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GPS setting in IC92
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URCALL to CQCQCQ,
RPT1 to the repeater call,
RPT2 to the gateway call (repeater call with
"G" in the eighth position).
This will allow your data stream to reach the
gateway but prevent it from going any further.
GPS data transmit when PTT is pushed.
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DPRS C1 or GPS Message
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This is the message that is sent when sending
GPS. In most radios, it is the C1 message. It
may also be called the GPS message.
Message with Checksum and Symbol
http://www.aprs-is.net/DPRSCalc.aspx
MV YING IC92AD*1F
MV = car symbol, 1F = checksum
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DPRS
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Radio without GPS build in.
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