ToCall

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(Identifying APRS Software Version: Added version strings for APRSpoint and Xastir)
(Identifying APRS Software Version)
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|APX142
 
|APX142
 
|Xastir 1.42
 
|Xastir 1.42
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|APU25N
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|-
 
|-
 
|APTW01
 
|APTW01

Revision as of 12:35, 11 May 2008

Specifying Symbols

If you are sending a packet that can't include the normal icon code embedded in the lat/lon position (/$), you can add one of these special beacon-style ToCalls to the address string of your packet.

Both nn and xy are placeholders to the APRS Symbol Table, while z is a placeholder for an optional symbol overlay.

  • GPSxyz
  • GPSCnn
  • GPSEnn
  • SPCxyz
  • SYMxyz

Identifying APRS Software Version

If you want to include the name and version of the software being used, you can add one of these ToCalls to the destination address, replacing the xx or xxx with the software version number.

This table is from the APRS 1.01 specification:

APCxxx APRS/CE, Windows CE
APDxxx Linux aprsd server
APExxx PIC-Encoder
APIxxx Icom radios (future)
APICxx ICQ messaging
APKxxx Kenwood radios
APMxxx MacAPRS
APPxxx pocketAPRS
APRxxx APRSdos
APRS older versions of APRSdos
APRSM older versions of MacAPRS
APRSW older versions of WinAPRS
APSxxx APRS+SA
APWxxx WinAPRS
APXxxx X-APRS
APYxxx Yaesu radios (future)
APZxxx Experimental

Other strings which have been heard on the air, but are not documented, include:

APO443 APRSpoint 4.4.3
APX142 Xastir 1.42
APU25N
APTW01
APU25N
APT311
APN382
APOT01
APIB10
APS199

Generic Beacon-Style ToCalls

  • AIR* †
  • ALL* To All stations.
  • AP*
  • BEACON
  • CQ* Calling CQ
  • GPS Specifically intended for use by trackers sending lat/long positions via digipeaters which have the capability of converting positions to compressed data format.
  • GPS* For specifying a symbol when unable to do so in the position report (e.g. NMEA strings)
  • DF* Direction Finding Report.
  • DGPS* Used by differential GPS correction stations. Most software will not make use of packets using this address, other than to pass them on to an attached GPS unit.
  • DRILL* Training Drill or Exercise
  • DX* DX Spot
  • ID*
  • JAVA*
  • MAIL*
  • MICE* Mic-E Report
  • QST* News Announcement
  • QTH*
  • RTCM* Used by differential GPS correction stations. Most software will not make use of packets using this address, other than to pass them on to an attached GPS unit.
  • SKY* Used for SkyWarn stations.
  • SPACE*
  • SPC* For specifying a Special Event Station symbol
  • SYM* For specifying a symbol, but reserved for future use
  • TEL* Telemetry station.
  • TEST*
  • TLM* Telemetry station.
  • WX*
  • ZIP* †

The asterisk is a wildcard, allowing the address to be extended (up to a total of 6 alphanumeric characters). † The AIR* and ZIP* addresses are deprecated.

These addresses are copied by everyone. All APRS software must accept packets with these destination addresses. The address GPS (i.e. the 3-letter address GPS,

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