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ReceiverBeacon.md

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As of version 0.2.6, a complete receiver beacon message looks as follows:

LKHS>APRS,TCPIP*,qAC,GLIDERN2:/211635h4902.45NI01429.51E&000/000/A=001689

This message is standard APRS:

  • 'LKHS>': origin
    • 'LKHS': receiver callsign
  • 'APRS,TCPIP*,qAC,GLIDERN2:': source
    • 'APRS': software version (always "APRS")
    • 'TCPIP*': tunneling (always "TCPIP*")
    • 'qAC': q construct (not suited for beacon identifcation)
    • 'GLIDERN2': receiver callsign (APRS server)
  • '/': either "/" (timestamp and position follow) or ">" (timestamp follows)
  • '211635h': timestamp in 24h notation UTC (21 hours, 16 minutes, 35 seconds)
  • '4902.45NI01429.51E&': optional position (WSG84)
    • '4902.45N': latitude (49 degrees, 2.45 minutes north)
    • 'I': display symbol - table to use (alternate symbol table "I")
    • '01429.51E': longitude (14 degrees, 29.51 minutes east)
    • '&': display symbol - position in table "I" to use (diamond symbol with overlay)
  • '000/000': optional heading and speed ("000/000" indicates no data)
    • '000': heading (001 thru 360) in degrees ("000" = no data)
    • '000': ground speed in knots (heading "000" = no data)
  • '/A=001689': optional altitude (1689 feet)