[OZAPRS] APRS Packet Errors

Ray Wells vk2tv at exemail.com.au
Mon Jul 8 07:50:01 EST 2013


 From the TAPR list a while back, there was discussion about  a buffer 
problem with a KPC3 TNC that caused delayed packets. Could that be an 
answer??

Ray vk2tv


On 07/07/13 23:22, Gerard Hill wrote:
> 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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>
>
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