[OZAPRS] APRS SSID usage !!!

[Richard Hoskin]

Hi Scott and All,

You bet me to it :)

However in 2003/4 or there about Bob Bruninga had a discussion on this and
came up with the SSID Guide that is at
http://www.aprs.net.au/aprs_ssid_guide.htm

This is the official SSID guide for Australia and unless you have reason
to
vary your SSID (such as running a BBS) you should follow this guide for
consistency. This reduces confusion and helps everyone understand what's
what.

If you feel the http://www.aprs.net.au/aprs_ssid_guide.htm SSID guide is
unclear or needs updating please email me with your proposal.

Cheers
Richard
VK3JFK

> -----Original Message-----
> From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
> Behalf Of Scott & Clare Evans
> Sent: Wednesday, 3 October 2007 7:51 PM
> To: Ozaprs at Aprs. Net. Au
> Subject: [OZAPRS] APRS SSID usage !!!
> 
> 
> Hi All. this was taken from Bob's website. I think it explains it all!
> 
> You can debate the usage as much as you like and essentially use what
ever
> you like!
> 
> 
> http://eng.usna.navy.mil/~bruninga/aprs/SSIDs.txt
> 
> APRS SSID Defaults                                             20 Feb
2004
>
--------------------------------------------------------------------------
> 
> Revised 2 June 2004 to add -10, -11 and -15
> 
> Since there are 20,000 APRS users on the air, the APRS maps and data can
> get very cluttered.  Also, most operators have multiple stations on the
> air, such as their HOME, CAR, BOAT, and HT.  It is very convenient to be
> able to recognize these typical applications at a glance.  Here are
those
> common defaults:
> 
>  -1, 2, 3, 4 are for digipeaters and other home stations
> 
>  -6  is for Operations via Satellite
>  -7  is for TH-D7 walkie talkies
>  -8  is for boats, sailboats and ships (maybe 802.11 in the future)
>  -9  is for Mobiles
>  -10 is for operation via The internet only
>  -11 is for APRStouch-tone users  (and the occasional Balloons)
>  -14 is for Truckers
>  -15 is for HF
> 
> Originally, in 1992, the first APRS GPS mobiles just transmitted raw
> NMEA-0183 GPS stings and so there was no way to insert a SYMBOL byte in
> the pre-formatted NMEA 183 packet.  Hence we defined 14 common SYMBOLs
as
> defaults to the 14 available SSID's that a mobile could use.  These
> included BIKES, HELOCOPTERS, AIRCRAFT, VANS and many others in addition
> to the ones above.  This is now OBSOLETE.
> 
> In the late 1990's we came up with a better solution and defined the
> AX.25 TOCALL of GPSxyz for such use.  In this case, the "xyz" characters
> can be used to define any of the hundreds of APRS symbols including
> Overlays.   Just look up the xyz in the SYMBOLS.TXT file included in all
> copies of APRSdos (or these days, on the WEB).
> 
> Since this GPSxyz concept was so powerful, it completely replaced the
> original SSID assignments and so those original NMEA defaults have been
> removed from the Documentation.
> 
> However the convention for the 6 most useful ones remains and should be
> used in the absesnce of any other overriding conditions.  Except for the
> TH-D7 and Truckers, the other SSID conventions mark APRS "TYPES" of
users
> that are independent of the many SYMBOLS they can use.  Thus it is nice
> to know HOW someone is getting into the system, whether via satellite,
> HF, the internet, or touchtone.  For example, using the -6 only for
Space
> applications is so that the global APRS WEB data bases will keep
> statistics and data for when you are operating through the satellites
> separate from when you are working normally.
> 
> So stick to the standards above for the obvious applications...  Of
course
> these are not rigid.  If you have more than 4 digipeaters, use any SSID
> you want.  These are only guidelines...
> 
> de WB4APR, Bob
> 
> 73 de VK7HSE Scott Evans
> 
> _______________________________________________
> Ozaprs mailing list
> Ozaprs at aprs.net.au
> http://aprs.net.au/mailman/listinfo/ozaprs

_______________________________________________
Ozaprs mailing list
Ozaprs at aprs.net.au
http://aprs.net.au/mailman/listinfo/ozaprs