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*[[http://www.aprs.net.au APRS Australia]] Australian APRS Web Site, References  
 
*[[http://www.aprs.net.au APRS Australia]] Australian APRS Web Site, References  
 
*[[http://aprs.od5.org APRS Middle East]] Middle Eastern APRS Web Site, Currently Lebanon only  
 
*[[http://aprs.od5.org APRS Middle East]] Middle Eastern APRS Web Site, Currently Lebanon only  
*[[http://www.aprs.net.nz/index.htm NZ APRS]] New Zealand APRS website
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*[[http://zlhams.wikidot.com/digital-aprs:aprs ZL APRS]] New Zealand APRS Wiki
 
*[[http://www.ohioaprs.net OhioAPRS]] Northeast Ohio APRS
 
*[[http://www.ohioaprs.net OhioAPRS]] Northeast Ohio APRS
 
*[[http://www.findu.com/cgi-bin/emergency.cgi]] Emergency Beacons.  Help those that need help, even those that test.
 
*[[http://www.findu.com/cgi-bin/emergency.cgi]] Emergency Beacons.  Help those that need help, even those that test.

Revision as of 02:02, 14 June 2008

APRS Logo

Contents

Automatic Position Reporting System

Also known as Automatic Packet Reporting System, APRS is an amateur radio based digital communications system for local, tactical, real-time exchange of information among all members of a net, including map based displays for situational awareness. It was developed by Bob Bruninga, [WB4APR], who currently works at the United States Naval Academy.

Capabilities

APRS is used to transmit real-time information such as messages, bulletins, announcements and the locations of any stations or objects via amateur packet radio protocols. Real-time reporting of station position for mobiles is facilitated using the Global Positioning System. APRS is capable of transmitting a wide variety of data including weather reports, short text messages, radio direction finding bearings, telemetry data, and storm forecasts. These reports can be combined with a computer and mapping software to show the transmitted data superimposed on a variety of map displays.

Technical Information

In its most widely used form APRS is transported over the air using the AX.25 protocol at 1200 baud Bell 202 audio frequency-shift keying on frequencies located in the amateur 2-meter band (see Frequencies). An extensive digital repeater, or digipeater network provides transport for APRS packets on these frequencies. Internet gateway stations (IGates) connect the on-air APRS network to the APRS Internet System (APRS-IS), which serves as a worldwide, high-bandwidth backbone for APRS data. Stations can tap into this stream directly. Databases connected to the APRS-IS allow web-based access to the data as well as more advanced data mining capabilities. A number of LEOs (low-earth orbiting satellites) and the International Space Station are also capable of relaying APRS data.

Topics

Upcoming Events APRS Uses History
Introductions Path Settings Frequencies
Hardware Software Protocol
Organizations Related Systems APRS Internet System (APRS-IS)
Satellites Glossary WikiUsage Contributing to this Wiki
ToCall Strings

External links

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