Amateur Radio Wiki - User contributions [en]

User:Wb2osz

2015-09-26T14:02:08Z

Wb2osz: Blanked the page

APRS

2015-09-23T12:29:55Z

Wb2osz: /* See also */

{{Template:Stub}}

APRS operates by receiving packets on a single fixed frequency (on [[2 meters]] this is normally 144.39MHz North America or 144.8MHz Europe), storing them and retransmitting them until they reach a station which can transfer the information to the Internet. Information in the packet header specifies a limit on the number of times one packet will be forwarded (typically WIDE 1,1) to prevent saturation of the network with large numbers of duplicative messages.

APRS has two meanings :

'''A'''utomatic '''P'''acket '''R'''eporting '''S'''ystem, its original (and correct) meaning, and

'''A'''utomatic '''P'''osition '''R'''eporting '''S'''ystem - this came about because position reporting became one of its main uses in ham radio.

== Applications ==

APRS has been often used to track weather balloons and [http://szijarto.ca/index.php?option=com_frontpage&Itemid=1 unmanned telemetry flights]. A small transmitter and a GPS are attached to the payload; various APRS stations can then log the flight path and broadcast the received information via Internet. When the payload returns to Earth, its position is immediately known so that the equipment and acquired data may be quickly retrieved by ground crews.

APRS has also been used by fixed stations to send periodic weather information (temperature, pressure, wind, humidity, precipitation, visibility) and by mobile stations to announce location and identify another frequency on which the mobile is accepting voice communications.

APRS can also be used to send short (typically one-line) text messages, although it affords no privacy to message content.

== Software==

* [https://github.com/wb2osz/direwolf Dire Wolf] a software "soundcard" modem/TNC, APRS digipeater, APRStt gateway (with speech response), Internet Gateway (IGate), APRS telemetry toolkit.

* [http://www.winaprs.com/xaprs.html x-APRS for Linux]

== See also ==

* [[Packet]]

* [https://github.com/wb2osz/direwolf/blob/master/doc/A-Better-APRS-Packet-Demodulator-Part-1-1200-baud.pdf Building a Better APRS Packet Demodulator]

== Links==
* [http://www.aprs.org/ APRS organisation]
* [http://info.aprs.net/ APRS.net wiki]
* [http://en.wikipedia.org/wiki/Automatic_Position_Reporting_System Wikipedia article]
* [http://www.winaprs.com/ WinAPRS.com]

{{modes}}

APRS

2015-09-23T12:25:58Z

Wb2osz: /* Software */

{{Template:Stub}}

APRS operates by receiving packets on a single fixed frequency (on [[2 meters]] this is normally 144.39MHz North America or 144.8MHz Europe), storing them and retransmitting them until they reach a station which can transfer the information to the Internet. Information in the packet header specifies a limit on the number of times one packet will be forwarded (typically WIDE 1,1) to prevent saturation of the network with large numbers of duplicative messages.

APRS has two meanings :

'''A'''utomatic '''P'''acket '''R'''eporting '''S'''ystem, its original (and correct) meaning, and

'''A'''utomatic '''P'''osition '''R'''eporting '''S'''ystem - this came about because position reporting became one of its main uses in ham radio.

== Applications ==

APRS has been often used to track weather balloons and [http://szijarto.ca/index.php?option=com_frontpage&Itemid=1 unmanned telemetry flights]. A small transmitter and a GPS are attached to the payload; various APRS stations can then log the flight path and broadcast the received information via Internet. When the payload returns to Earth, its position is immediately known so that the equipment and acquired data may be quickly retrieved by ground crews.

APRS has also been used by fixed stations to send periodic weather information (temperature, pressure, wind, humidity, precipitation, visibility) and by mobile stations to announce location and identify another frequency on which the mobile is accepting voice communications.

APRS can also be used to send short (typically one-line) text messages, although it affords no privacy to message content.

== Software==

* [https://github.com/wb2osz/direwolf Dire Wolf] a software "soundcard" modem/TNC, APRS digipeater, APRStt gateway (with speech response), Internet Gateway (IGate), APRS telemetry toolkit.

* [http://www.winaprs.com/xaprs.html x-APRS for Linux]

== See also ==

* [[Packet]]

== Links==
* [http://www.aprs.org/ APRS organisation]
* [http://info.aprs.net/ APRS.net wiki]
* [http://en.wikipedia.org/wiki/Automatic_Position_Reporting_System Wikipedia article]
* [http://www.winaprs.com/ WinAPRS.com]

{{modes}}

Mac software

2015-09-23T12:18:45Z

Wb2osz:

Related wiki pages; [[Software]], [[Calculators]], [[Websites]], [[User Groups]]

Software for computers running Mac Operating Systems

* [http://www.blackcatsystems.com/ Back Cat Systems] Software for mac and windows

* [https://github.com/wb2osz/direwolf Dire Wolf] a software "soundcard" modem/TNC, APRS digipeater, APRStt gateway (with speech response), Internet Gateway (IGate), APRS telemetry toolkit.

* [http://www.dogparksoftware.com/ Dog Park Software]

* [http://www.gm4jjj.co.uk/iCluster/iCluster.htm iDXSpot] DX-Cluster telnet access

* [http://www.gm4jjj.co.uk/lcd/lcd.html LCD Clock] Ham Radio LCD Clock Utility - displays UTC or local time and date from GM4JJJ.

* [http://www.machamradio.com/page1/page1.html Mac Ham Radio] OS X, X11 and Java Applet software

* [http://www.gm4jjj.co.uk/MoonSked/moonsked.htm MoonSked] for moonbounce scheduling and tracking from GM4JJJ.

* [http://www.geocities.com/SiliconValley/Bay/5899/ The Mac Shack] General index of software for macs

{{software}}

Linux software

2015-09-23T12:17:44Z

Wb2osz: /* Software for computers running Linux Operating Systems */

Related wiki pages: [[Software]], [[Modes]], [[Websites]], [[Calculators]], [[User Groups]]

==Software for computers running Linux Operating Systems==

* [http://www.winaprs.com/xaprs.html APRS for Linux]

* [http://www.hamtools.org/cutecw Cute CW], a morse code training package. Also runs on other platforms.

* [http://packages.debian.org/stable/hamradio/ Debian software packages] from debian.org

* [https://github.com/wb2osz/direwolf Dire Wolf] a software "soundcard" modem/TNC, APRS digipeater, APRStt gateway (with speech response), Internet Gateway (IGate), APRS telemetry toolkit.

* [http://www.w1hkj.com/Fldigi.html Fldigi digital mode software] from W1HKJ. This software also runs on Free-BSD, OS X, Win XP, Win Vista.

* [http://gmfsk.connect.fi/ gMFSK] multimode digital terminal

* [http://radio.linux.org.au/ HamSoft] from Linux.org.au

* [http://hamshack-hack.sourceforge.net/ Harv's hamshack] A huge resource for hams using Linux.

* [http://www.qsl.net/ka5wss/logconv/linux.htm Linux and Amateur Radio]

* [http://edu.kde.org/marble/ Marble - The desktop globe] has support for displaying APRS stations on the map.

* [http://www.gm4jjj.co.uk/MoonSked/moonsked.htm MoonSked] for moonbounce scheduling and tracking from GM4JJJ.

* [http://users.telenet.be/on4qz/qsstv/index.html QSSTV] for Linux users. This is a relatively new program. The source code is available under the GNU license.

* [https://wiki.ubuntu.com/AmateurRadio Ubuntu Amateur Radio]

* [http://developer.berlios.de/projects/wsjt/ WSJT source code]

* [http://wsprnet.org/drupal/node/165 WSPR for Linux] for a report on compiling for an Asus EE. Go to [http://www.g4ilo.com/wspr.html G4ILO website] for the link to uploadable files ( the link can be found at the bottom of the page)

==See also==

* [http://blacksparrowmedia.com/lhs/ Linux in the Ham Shack] Podcast
* [http://www.linux-ax25.org/wiki/ Linux-AX25] wiki

{{software}}