APRS or Automatic Position Reporting System
(as a protocol layer of the non-connected Packet mode)
Creator : Bob Bruninga (WB4APR) in 1992
From "What is APRS" in "APRS protocol reference version 1.0", it is explained that:
"APRS is short for Automatic Position Reporting System, which was
designed by Bob Bruninga, WB4APR, and introduced by him at the 1992
TAPR/ARRL Digital Communications Conference.
Fundamentally, APRS is a Packet communication protocol for
disseminating live data to everyone on a network in real time. Its most
visual feature is the combination of Packet radio with the Global
Positionning System (GPS) satellite network, enabling radio amateurs to
automatically display the positions of radio stations and other objects
on maps on a PC.
Other features not directly related to position reporting are
supported, such as weather station reporting, direction finding and
APRS is described in the "APRS protocol reference version 1.0" written
by G3NRW (Ian) and the "APRS Working Group". This protocol is available
on the TAPR Web site.
Modifications (version 1.1) and corrections have been introduced.
PACKET 300 bauds + APRS (USB)
3590-3600 (QSO), 10150 LSB (APRS), 14090-14099 (QSO), 14101-14112
(BBS), 14105 (APRS), 18102 (APRS), 21100-21120 (QSO), 21113 (APRS),
28120-28150 KHz (QSO)