[aprssig] Where is KT5TK-11?

[Lynn W. Deffenbaugh (Mr)]

If you look closely at the raw packets at 
http://aprs.fi/?c=raw&call=KT5TK-11 you'll see that K5COD apparently 
replayed the earlier flight packets into APRS-IS MUCH delayed and with 
an unused path (direct reception on all packets?  I don't think so!).

Hessu, I don't think there's anything wrong with your delayed packet 
detector in this instance.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 2/12/2012 3:25 PM, Heikki Hannikainen wrote:
> On Sun, 12 Feb 2012, Greg D wrote:
>
>> Hi folks,
>>
>> I'm confused.  Or, something is.
>>
>> According to Findu, the balloon is over Dickinson Texas, last 
>> received 1 hr, 37 minutes ago.
>>
>> According to aprs.fi, the balloon is off the Louisiana coast, last 
>> received some 10 hrs ago.
>>
>> They can't both be right...  Probably neither is, but what's up with 
>> APRS-IS?
>
> The duplicate filtering used on aprs.fi filtered some last packets, 
> due to the rather ambiguous local-time timestamp jumping back:
>
> http://aprs.fi/?c=raw&call=KT5TK-11
>
> I'll have to improve that code a bit to ignore backwards-jumping 
> timestamps if there's enough real time passing, or if the timestamps 
> continue to roll on nicely after the jump backwards.
>
>   - Hessu
>
>
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