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[aprssig] Duplicate Packet - Sending too soon to CQSRVR

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Tue Jan 12 22:21:30 UTC 2010


Cross-posted to javaprssrvr to see if there are any comments on this 
duplicated message in APRS-IS...

Actually, if you look at your Raw packets:

 2010-01-12 21:30:54 UTC: *VK2JNG-9 
<http://aprs.fi/?c=raw&limit=&call=VK2JNG-9>*>APK102,VK2BTQ-1* 
<http://aprs.fi/?c=raw&limit=&call=VK2BTQ-1>,WIDE2-1,qAR,VK2IN-5 
<http://aprs.fi/?c=raw&limit=&call=VK2IN-5>::CQSRVR :CQ CQ Gerard 
EL#63666 147.050MHz{58
 2010-01-12 21:30:54 UTC: *VK2JNG-9 
<http://aprs.fi/?c=raw&limit=&call=VK2JNG-9>*>APJIC1,qAR,CQSRVR::KJ4ERJ-12:CQ 
CQ Gerard EL#63666 147.050MHz *[Duplicate message content]*
 2010-01-12 21:30:54 UTC: *VK2JNG-9 
<http://aprs.fi/?c=raw&limit=&call=VK2JNG-9>*>APJIC1,qAR,CQSRVR::WB4APR-9 
:CQ CQ Gerard EL#63666 147.050MHz *[Duplicate message content]*
 2010-01-12 21:30:55 UTC: *VK2JNG-9 
<http://aprs.fi/?c=raw&limit=&call=VK2JNG-9>*>APK102,VK2BTQ-1 
<http://aprs.fi/?c=raw&limit=&call=VK2BTQ-1>,VK2RAG-1 
<http://aprs.fi/?c=raw&limit=&call=VK2RAG-1>,WIDE2*,qAR,VK2ZEN-5 
<http://aprs.fi/?c=raw&limit=&call=VK2ZEN-5>::CQSRVR :CQ CQ Gerard 
EL#63666 147.050MHz{58 *[Duplicate message ID]*

The problem, I believe, is that final packet.  VK2IN-5 gated your first 
packet by way of VK2BTQ-1.  That's the one that CQSRVR acted on sending 
out the two notifications to KJ4ERJ-12 (coincidentally me) and WB4APR-9 
(Bob).

The final packet gated by VK2ZEN-5 should not be showing up at all 
assuming that every server in the APRS-IS chain is using a 30 second 
dupe check.  I've noticed that if multiple IGates hear a packet near 
simultaneously, a duplicate like this can actually show up in the raw 
APRS-IS logs.  The aprs.fi Messages screen suppresses these duplicates 
so you have to look at Raw to see them.

Lynn (D) - KJ4ERJ

JandG wrote:
> This is what I see after sending my message to CQSRVR:
>  
>  
>  2010-01-12 21:30:54 UTC: *VK2JNG-9 
> <http://aprs.fi/?c=message&limit=&call=VK2JNG-9>*>*CQSRVR 
> <http://aprs.fi/?c=message&limit=&call=CQSRVR>*: CQ CQ Gerard EL#63666 
> 147.050MHz
>  2010-01-12 21:30:54 UTC: *CQSRVR 
> <http://aprs.fi/?c=message&limit=&call=CQSRVR>*>*VK2JNG-9 
> <http://aprs.fi/?c=message&limit=&call=VK2JNG-9>*: 2 messages sent to CQ
>  2010-01-12 21:30:55 UTC: *CQSRVR 
> <http://aprs.fi/?c=message&limit=&call=CQSRVR>*>*VK2JNG-9 
> <http://aprs.fi/?c=message&limit=&call=VK2JNG-9>*: Sending too soon to CQ
>  
> When you do a message via the Kenwood TM-D710 it sends it 5 times at 
> approx 1 minute intervals unless an acknowledgement has been received 
> back.
>  
> Could that be causing the message : Sending too soon to CQ?????
>  
> Gerard
> VK2JNG




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