APRS-IS (Automatic Packet Reporting System-Internet
Service) is the common name given to the Internet-based network which
inter-connects various APRS radio networks throughout the world (and space).
APRS-IS is maintained and operated by volunteer Amateur Radio operators to
provide world-wide capabilities to the Amateur Radio APRS RF networks and to promote the Amateur Radio
service as a whole.
Because the primary function of APRS-IS is to support Amateur Radio APRS
on RF, the following must be kept in mind by users and software
authors who inject packets directly into APRS-IS:
- It MUST be assumed that every packet on APRS-IS will be gated to or was gated
This means that beacon rates, packet contents, etc. MUST be considered to be
acceptable for RF.
- If you want to inject non-amateur radio content, use the FireNet local-only port
to prevent the packets from entering APRS-IS. FireNet exists to give
amateur radio operators and authors a place to inject non-amateur radio
information such as METAR reports, detailed earthquake reports, etc. for FireNet
users while not adversely affecting APRS-IS. FireNet users still have full access to APRS-IS in addition to the FireNet local packets.
- Do NOT inject non-amateur radio content falsely identifying it as amateur radio
stations. Use APRS Objects instead. APRS Objects are specifically
apropos for non-amateur radio information.
- Beacon rates should be set apropos to as if the station was on a busy RF
frequency (never faster than 1 minute for mobile, 5 minutes for
weather, 10 minutes for local infrastructure (repeaters, for instance), and 20
minutes for fixed stations).
- Authors, do NOT hijack another software's TO call (APxxxx). If you don't
understand APRS and APRS-IS, don't design software to falsely identify itself.
- Authors, YOU are responsible for issuing
passcodes to amateur radio operators ONLY. Do not make
this available in an ondemand fashion nor point your software users to someone
This web site is your gateway to APRS on the Internet. There are technical specifications for software authors.
There are links to various software products available to link into the APRS-IS feed. There are links to
online services available to APRS users and to web users. Please browse around and discover the fun!