[OZAPRS] APRS Packet Errors

Sun Jul 7 23:22:21 EST 2013

Its easier to see the delays on the packets when they contain a 
timestamp such as those from VK3LJS-9:
http://aprs.fi/?c=raw&call=VK3LJS-9

Seems that packets via VK3GY-1 can be delayed by up to half an hour, 
however, most seem to be delayed by 10-20 mins. The following posit has 
a timestamp of 0903z and was submitted at 1933 EST (=0933z):
2013-07-04 19:33:09 EST: 
VK3LJS-9>APOTC1,VK3CV-1*,qAR,VK3GY-1:/040903z3810.68S/14420.39E>018/000 
12.8V 23C [Delayed or out-of-order packet (timestamp)]

Cheers,
Gerard - VK2IO

On 7/07/2013 6:48 PM, Greg Ahpee wrote:
> I have been experiencing a lot of packet errors in the Melbourne 
> network lately (See below).
> They seem to be either 'Duplicate Packets', 'Location Changes Too 
> Fast' or 'Rate Limited' errors and all the errored packets appear to 
> have been routed via VK3GY-1.
> I am not an expert on APRS but I am wondering if VK3GY-1 is putting 
> the an incorrect timestamp on the packets or is delaying them for 
> around 15 minutes for some reason.
>
> Hopefully someone with more experience than me can shed some light on 
> this problem.
>
>
> Greg Ahpee VK3BZQ
>
>
> 2013-07-07 13:57:14 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S8P8T8,VK3ANR-3 
> <http://aprs.fi/?c=raw&limit=&call=VK3ANR-3>,WIDE1,VK3MY-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3MY-1>,WIDE2-1,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`H1=nsE>/
> 2013-07-07 14:03:16 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S8P5S7,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`H1Do>$>/
> 2013-07-07 14:11:42 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S8P1S4,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`H6rqHW>/
> 2013-07-07 14:13:40 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S8P0T7,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`H8fq4W>/
> 2013-07-07 14:14:40 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S8P0P3,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`H9bq W>/
> 2013-07-07 14:15:40 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S7U9V0,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`H:[q W>/
> 2013-07-07 14:16:18 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S8P8T8,VK3ANR-3 
> <http://aprs.fi/?c=raw&limit=&call=VK3ANR-3>,WIDE1,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,qAR,VK3GY-1 
> <http://aprs.fi/?c=raw&limit=&call=VK3GY-1>:`H1=nsE>/*[Location 
> changes too fast (adaptive limit)]*
> 2013-07-07 14:18:55 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S8P5S7,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,qAR,VK3GY-1 
> <http://aprs.fi/?c=raw&limit=&call=VK3GY-1>:`H1Do>$>/*[Duplicate 
> position packet]*
> 2013-07-07 14:19:42 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S7U7W0,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`H>+q S>/*[Location 
> changes too fast (adaptive limit)]*
> 2013-07-07 14:22:43 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S7U6R7,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`H at jq S>/vk3bzq at gmail.com
> 2013-07-07 14:23:43 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S7U5W6,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`HA[q T>/
> 2013-07-07 14:26:43 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S7U4W8,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`HDZq*^>/
> 2013-07-07 14:27:43 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S8P1S4,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,qAR,VK3GY-1 
> <http://aprs.fi/?c=raw&limit=&call=VK3GY-1>:`H6rqHW>/*[Location 
> changes too fast (adaptive limit)]*
> 2013-07-07 14:27:44 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S7U4T4,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`HEZq*T>/*[Location 
> changes too fast (adaptive limit)]*
> 2013-07-07 14:29:44 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S7U3P3,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,WIDE2-2,qAS,VK3API-13 
> <http://aprs.fi/?c=raw&limit=&call=VK3API-13>:`HFQq>#>/
> 2013-07-07 14:29:44 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S8P0T7,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,qAR,VK3GY-1 
> <http://aprs.fi/?c=raw&limit=&call=VK3GY-1>:`H8fq4W>/*[Rate limited (< 
> 5 sec)]*
> 2013-07-07 14:30:09 EST:*VK3BZQ-9 
> <http://aprs.fi/?c=raw&limit=&call=VK3BZQ-9>*>S8P0P3,VK3CV-1* 
> <http://aprs.fi/?c=raw&limit=&call=VK3CV-1>,qAR,VK3GY-1 
> <http://aprs.fi/?c=raw&limit=&call=VK3GY-1>:`H9bq W>/*[Duplicate 
> position packet]*
>
>
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