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[aprssig] Delayed traffic ?

Robert Bruninga bruninga at usna.edu
Tue Jan 15 20:34:43 UTC 2008


One of the reassons why I don't like terrestrial digipeating of
ISS packets.  All it takes is a weak squelch somewhere, and
packets become non-real-time very quickly.  Hours old, if a
noise source appears near a digi...  Bob, WB4APR 

> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org 
> [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Andrew
Rich
> Sent: Tuesday, January 15, 2008 3:24 PM
> To: Aprssig
> Cc: ozaprs
> Subject: [aprssig] Delayed traffic ?
> 
> This is the first time I have seen this, the other day i was 
> looking at logs of ISS.
>  
> I had 3 independant tracking systems telling me that ISS was 
> over water out in an ocean no where near me.
>  
> And yet i saw some data logged from the IS that was out of
sink.
>  
> So I thought it may be a station doing a replay but there was 
> more than one station involved.
>  
> ISS went down below the horizon at 19:14 local, and then 
> while I was getting ready for the next pass, I noticed this 
> "extra" data came in from the APRS IS.
>  
> The data in this log, comes from a perl script that writes 
> live to a file.
>  
> I know the ISS times are correct, because I heard the 
> satellite. ie the sat times are correct.
>  
>  
> 14/01/2008 20:46:05 
> VK4TEC-6>BEACON,RS0ISS-4*,WIDE,qAo,VK3JTM-5:T#268,001,001,015,
011,147,11111111,1111,0 
> 14/01/2008 20:45:55 
> VK4TEC-6>BEACON,RS0ISS-4*,WIDE,qAO,VK4TEC:T#267,001,001,016,01
2,124,11111111,1111,0 
> 14/01/2008 20:45:53 RS0ISS-4>CQ,SGATE,qAO,VK4TEC:Welcome to 
> RS0ISS's message board 
> 14/01/2008 20:45:51 RS0ISS-11>VK2MAL,qAO,VK4TEC: <>: 
> 14/01/2008 20:45:39 RS0ISS-11>VK2MAL,qAO,VK4TEC: <>: 
> 14/01/2008 20:45:24 
> VK4TEC-6>BEACON,RS0ISS-4*,WIDE,qAo,VK3JTM-5:=2734.44S/15306.20
> E`ISS Ground station 
> 14/01/2008 20:45:15 
> VK4TEC-6>BEACON,RS0ISS-4*,WIDE,qAo,VK3JTM-5:T#263,001,001,015,
010,125,11111111,1111,0 
> 
> 14/01/2008 20:40:25 ------------------------- VK4TEC: 
> Satellite ISS up at this time 
> 
> 14/01/2008 20:06:06 
> VK4TEC-6>BEACON,RS0ISS-4,ZL3GR*,qAr,ZL1AMW-14:T#721,001,000,01
5,011,099,11111111,1111,0 
> 14/01/2008 20:05:12 
> VK4TEC-6>BEACON,RS0ISS-4,ZL3GR*,qAr,ZL1AMW-14:T#714,001,001,01
5,012,165,11111111,1111,0 
> 14/01/2008 20:04:26 
> VK4TEC-6>BEACON,RS0ISS-4,ZL3GR*,qAr,ZL1AMW-14:T#709,000,001,01
5,011,144,11111111,1111,0 
> 14/01/2008 20:04:19 
> VK4TEC-6>BEACON,RS0ISS-4,ZL3GR*,qAr,ZL1AMW-14:T#708,001,000,01
5,011,122,11111111,1111,0 
> 14/01/2008 20:03:52 
> VK4TEC-6>BEACON,RS0ISS-4*,WIDE,qAo,VK3JTM-5:T#705,001,001,014,
010,126,11111111,1111,0 
> 14/01/2008 20:02:13 
> VK4TEC-6>BEACON,RS0ISS-4,ZL3GR*,qAr,ZL1AMW-14:T#699,001,000,01
5,012,132,11111111,1111,0 
> 
> 14/01/2008 19:14:58 ------------------------- VK4TEC: 
> Satellite ISS down at this time
>  
>  
> 
>  
> --------------------------------------------------------------
> --------------
> Andrew Rich VK4TEC
> vk4tec at people.net.au
> http://www.tech-software.net <http://www.tech-software.net/> 
>  
>  
>  
> 





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