[OZAPRS] perl IGATE

[Mark Jessop]

That is not how an igate is supposed to work. What you are doing there is
generating packets from your own callsign, with the off-air data as the
packet contents.

An igate is just meant to add qAR,CALLSIGN onto the end of the path, and
pass the packet onto aprs-IS. Go look at the raw data for just about any
mobile station on aprs.fi for an example, and go read the

You also appear to have asked this question before on the TAPR mailing list
in 2013. The response in that thread was 'why reinvent the wheel'.
It appears to be surprisingly hard to do igating right, and as a result
many igates mangle packets in numerous interesting ways. The author of
aprs.fi has written a post on the common problems here:
https://github.com/hessu/aprsc/blob/master/doc/IGATE-HINTS.md

- Mark VK5QI

On Aug 21, 2017 11:16 AM, "Andrew Rich" <vk4tec at tech-software.net> wrote:

> Hello
>
> I am making a little raspberry pi gate using perl
>
> What am I doing wrong here ?
>
> 2017-08-21 11:39:38 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,THIRD:VK2UWP-9>RW07T7,VK4RMC-3,WIDE1*,WIDE2-2/1:`PV^l IR/]"4#}= [Unsupported
> packet format]
> 2017-08-21 11:39:40 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,THIRD:VK2UWP-9>RW07T7,VK4RMC-3,WIDE1*,WIDE2-1/1:`PV^l IR/]"4#}= [Unsupported
> packet format]
> 2017-08-21 11:39:42 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,THIRD:VK2UWP-9>RW07T7,VK4RMC-3,WIDE1,VK4RAI-3*,
> WIDE2-1/1:`PV^l IR/]"4#}= [Unsupported packet format]
> 2017-08-21 11:39:43 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,THIRD:VK2UWP-9>RW07T7,VK4RMC-3,WIDE1,VK4RAI-3,
> VK4GME-3,WIDE2*/1:`PV^l IR/]"4#}= [Unsupported packet format]
> 2017-08-21 11:39:55 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,THIRD:VK2UWP-9>RW07T8,VK4RMC-3,WIDE1*,WIDE2-2/1:`PV^lTAR/]"4#}= [Unsupported
> packet format]
> 2017-08-21 11:39:56 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,THIRD:VK2UWP-9>RW07T8,VK4RMC-3,WIDE1*,WIDE2-1/1:`PV^lTAR/]"4#}= [Unsupported
> packet format]
> 2017-08-21 11:39:58 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,THIRD:VK2UWP-9>RW07T8,VK4RMC-3,WIDE1,VK4RAI-3*,
> WIDE2-1/1:`PV^lTAR/]"4#}= [Unsupported packet format]
> 2017-08-21 11:42:14 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK4RBR-3>APNU19,WIDE2-2/1:>Mt Gravatt
> Institute of TAFE  Ui-Digi  v19b3 [Unsupported packet format]
> 2017-08-21 11:42:14 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK4RBR-3>APNU19,VK4RMC-3*,WIDE2-1/1:>Mt
> Gravatt Institute of TAFE  Ui-Digi  v19b3 [Unsupported packet format]
> 2017-08-21 11:42:14 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK4RBR-3>APNU19,VK4RAI-3*,WIDE2-1/1:>Mt
> Gravatt Institute of TAFE  Ui-Digi  v19b3 [Unsupported packet format]
> 2017-08-21 11:42:14 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK2UWP-9>RW09P8,VK4RMC-3,WIDE1*,WIDE2-2/1:`PV` qqR/]"4$}= [Unsupported
> packet format]
> 2017-08-21 11:42:14 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK2UWP-9>RW09P8,VK4RMC-3,WIDE1*,WIDE2-1/1:`PV` qqR/]"4$}= [Unsupported
> packet format]
> 2017-08-21 11:42:18 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK4RAI-3>APMI04,WIDE2-2/1:>Club Net 2200 Zulu
> 146.900 & 438.375 & 439.300 91.5Hz Input [Unsupported packet format]
> 2017-08-21 11:42:20 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK4RAI-3>APMI04,WIDE2-1/1:>Club Net 2200 Zulu
> 146.900 & 438.375 & 439.300 91.5Hz Input [Unsupported packet format]
> 2017-08-21 11:42:22 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK4RAI-3>APMI04,VK4RMC-3*,WIDE2-1/1:>Club Net
> 2200 Zulu 146.900 & 438.375 & 439.300 91.5Hz Input [Unsupported packet
> format]
> 2017-08-21 11:42:36 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK4ZF-9>RW32S7,VK4RMC-3,WIDE1*/1:`Q(<0x1e>l!
> yR/`"4=}davhop at bigpond.net.au_% [Unsupported packet format]
> 2017-08-21 11:42:44 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK2UWP-9>RW09U2,VK4RMC-3,WIDE1*,WIDE2-2/1:`PVa S`R/]"4&}= [Unsupported
> packet format]
> 2017-08-21 11:42:45 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK2RPL-3>APNU3B,WIDE2*/1:!2832.56S/15317.41E#
> PHG5530/SARC 146.800 123H 438.675 123H IRLP6220 [Location changes too
> fast (adaptive limit)]
> 2017-08-21 11:42:45 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK2UWP-9>RW09U2,VK4RMC-3,WIDE1*,WIDE2-1/1:`PVa S`R/]"4&}= [Unsupported
> packet format]
> 2017-08-21 11:42:47 AEST: VK4TEC-11
> <http://aprs.fi/?c=raw&limit=&call=VK4TEC-11>>APPERL,TCPIP*,
> qAC,EIGHTH:VK2UWP-9>RW09U2,VK4RMC-3,WIDE1,VK4RAI-3*,
> WIDE2-1/1:`PVa S`R/]"4&}= [Unsupported packet format]
>
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