Radioactive Networks
Home
Consult
Tracking
APRS
Main
OziAPRS
APRSd
VK2 Info
TinyTrak
OpenTrack
Software
Hardware
Resources
FindU.COM
Weather
Books
GPS
TeamTrack
802.11
Ham
Articles
Personal
Technology
Software
Products
Contact
Search
Blog


Google

   
     Aprsd Information     AprsdDoc     perlFilter     Ports     

2000 Digital Communications Conference - Orlando, USA
Intelligent Filtering of APRS IGATE Data Streams

This page contains a link to my paper for the 2000 Digital Communications Conference, as well as containing the companion software. This page also contains the documentation for this software.

  • APRS Filtering Paper - WORD Format
  • Software - TAR'ed and GZIP'ed

    To run
        ./perlFilter.pl VKZL.conf

    This will run the software interactively.

    Of course you may want to edit the CONF file first.
     

    VKZL.conf - Configuration file for perlFilter
    # @prefix is a list of callsign ranges that this filter will allow through
    # regardless of their present position. For instance @prefix = ("VK","ZL")
    # will let throgh VK2TDS and ZL1AMW if they are in their home countries or
    # if they are within range of an IGATE in ROME or MIAMI.
    #
    # More prefixes may be added creating a line such as 
    #         @prefix = ("W","AA","N7","VE");

    @prefix = ("VK","ZL");

    # @grid_OK contains a list of all the GRID squares that are permitted through
    # the IGATE. Before letting a packet through it will decode the position from 
    # any of the formats understood by perlAPRS such as Lat/Long format into 
    # Grid Square format. 
    #
    # The software understands 2, 4 and 6 letter GRID SQUARES allowing quite 
    # precise filtering whilst maintaining quick processing. An example is the 
    # bizzare 
    #         @grid_OK = ("QE", "QF55", "QA55NX");
    #
    # For Australia and New Zealand, the following are used

    @grid_OK = ("OH","PH","QH","RH","OG","PG","QG","RG","OF",
       "PF","QF","RF","OE","PE","QE","RE","OD","PD","QD","RD");

    # The next few lines are tricky, and must not be mixed up. The lines with the
    # variables ending with _1 are for the UP-LINK, and those ending with _2 are 
    # DOWN-LINK. 
    #
    # The lines starting $telnet start a special version of TELNET that maintains
    # a connection to the server wherever possible. This version of TELNET is special
    # in that the PORT number is the first paramater, followed by one or more servers.
    # Whenever a connection is lost, the server will attempt to connect to the next
    # server. The software may not be elegant, but it works.
    #
    # Future versions will contain a server program in place of the TELNET program so that
    # the single IGATE can connect to it directly.
    #
    # The lines starting with $auth are the authorisation lines to be sent to the server. 
    # If you cannot work out how to make them work, you should not be using this software. 
    # The important thing to note is that my software will set $version to the current
    # version. Please do not edit this version of the line.

       $telnet_1 = "./myTelnet.pl 23 aprs.net second.aprs.net";
       $auth_1 = "user LUSER pass 12345 VERS $version\n\r\n";
       $telnet_2 = "./myTelnet.pl 10152 localhost";
       $auth_2 = "user LUSER pass 12345 VERS $version\n\r\n";


     
     
     
     
     

    ____
    Welcome to our Techical Site. If you are interested in an overview, then visit our Marketing Site
    Copyright © 1994-2006 Radioactive Networks , darryl@radio-active.net.au
    This page was last updated 2005-09-01 20:20:41
    This page was last compiled 2006-02-21 14:49:50
    Question or Comment? Click here