[aprssig] APRS on TCP/IP

Stephen H. Smith wa8lmf2 at aol.com
Sun Aug 5 18:17:35 EDT 2012

On 8/5/2012 6:07 AM, AA3JY at Winlink.org wrote:
> A few questions to narrow it down a bit:
> What servers are you connecting to?
> ahubswe.net:2023
> aprsca.net:10152
> What software are you using as the client?
> UI-View32

These ports are overwhelmingly obsolete.   Users are now being urged by all 
server operators to use the user-defined port 14580 filter port instead.    On 
port 14580, you can custom define a feed that meets your requirements far more 
precisely.  You can ask for a specific radius around a given lat/long point (or 
a given callsign), a rectangular box bounded by a pair of lat/long points, by 
callsign or callsign prefix, by APRS symbol type and much more.

You can combine multiple filter expressions to, for example, bound your home 
location or state with a box of a given size + a circle around a friend's 
location on a trip at the other side of the country.    You can also EXCLUDE 
various combinations of symbols, areas, etc.

The user-defined filter is vastly more versatile than the classic fixed feeds 
and can tremendously reduce the bandwidth consumption by not sending you a 
firehose of stuff you DON'T want.

Full details on my web site at:

JavAPRS Filter Port 14580 Guide

Note that in UIview, the command line that begins with "filter" and then some 
expressions is entered into the field "Extra log-on text" on the "Setup, APRS 
Server Setup" page.   You will also have to hit "Insert" and enter at least one 
new line into the APRS server list, specifying a servername:14580  such as:

.        aprsca.net:14580

All the APRS servers, both the classic tier 1 and all the tier 2 servers, now 
support (and encourage the use of) the port 14580 filter port.



Stephen H. Smith    wa8lmf (at) aol.com
EchoLink Node:      14400    [Think bottom of the 2M band]
Home Page:          http://wa8lmf.com  --OR--   http://wa8lmf.net

Mobile SSTV LiveCAM!

*** NEW ***  HF APRS Using PSK63

"APRS 101"  Explanation of APRS Path Selection & Digipeating

Updated "Rev H" APRS            http://wa8lmf.net/aprs
Symbols Set for UI-View,
UIpoint and APRSplus:

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