SBARC Tech's Help Solve Global APRS Flaw
It all began when Levi Maaia, K6LCM, was engaged with yet another of his stratosphere weather balloon experiments at the Anacapa School. An experimental sensor array data feeding a Byonics TNC to the SBARC APRS 144.39 system turned into unexpected results. Levi soon discovered a reporting flaw on the aprs.fi global reporting system. He noticed his WX data wasn't showing up on aprs.fi, but it was showing up on findu.com. The issue quickly got the attention of Shaw Takeuchi, AE6BL, of SBARC, Heikki Hannikainen (Hessu) in Finland who is the author of aprs.fi as well as Pete Loveall, AE5PL, author of javaparssrvr. Lead troubleshooter was Lynn W Deffenbaugh (Mr), KJ4ERJ, author of APRSISCE for Windows Mobile and Win32 who was assigned to the case. It was discovered that the global complex network of data servers in multiple layers had two servers which were misconfigured causing the system to drop WX data coming from APRS.
Worldwide flash emails were going back and forth this week to help nail down the heretofore undiscovered flaw in the system. With Levi discovering the problem and Shaw defending the SBARC configuration it focused the the worldwide experts on solving the server problem. There is much more detail to this story which hopefully can be documented for a good Key-Klix article. You guy's did a GREAT JOB of global team work in communicating the data back to the authors in solving their undiscovered problem.
Congrats, and another win for the power of open-source software.
Heaven only knows how long it would have taken if a fully commercial product . . .
:-) neil
----- Original Message ----- From: "Bill Talanian" w1uuq@cox.net To: "sbarc list" sbarc-list@lists.netlojix.com Sent: Friday, May 4, 2012 12:52:11 PM Subject: [Sbarc-list] SBARC team solves worldwide aprs problem
SBARC Tech's Help Solve Global APRS Flaw
It all began when Levi Maaia, K6LCM, was engaged with yet another of his stratosphere weather balloon experiments at the Anacapa School. An experimental sensor array data feeding a Byonics TNC to the SBARC APRS 144.39 system turned into unexpected results. Levi soon discovered a reporting flaw on the aprs.fi global reporting system. He noticed his WX data wasn't showing up on aprs.fi, but it was showing up on findu.com. The issue quickly got the attention of Shaw Takeuchi, AE6BL, of SBARC, Heikki Hannikainen (Hessu) in Finland who is the author of aprs.fi as well as Pete Loveall, AE5PL, author of javaparssrvr. Lead troubleshooter was Lynn W Deffenbaugh (Mr), KJ4ERJ, author of APRSISCE for Windows Mobile and Win32 who was assigned to the case. It was discovered that the global complex network of data servers in multiple layers had two servers which were misconfigured causing the system to drop WX data coming from APRS.
Worldwide flash emails were going back and forth this week to help nail down the heretofore undiscovered flaw in the system. With Levi discovering the problem and Shaw defending the SBARC configuration it focused the the worldwide experts on solving the server problem. There is much more detail to this story which hopefully can be documented for a good Key-Klix article. You guy's did a GREAT JOB of global team work in communicating the data back to the authors in solving their undiscovered problem.
_______________________________________________ SBARC-list mailing list SBARC-list@lists.netlojix.com http://lists.netlojix.com/mailman/listinfo/sbarc-list
I needed Vermont and Rhoad Island to finally qualify for WAS via my 100-watt mobile station only. The New England QSO Party came through for me! At first, I couldn't hear any east coast stations. However, after a few hours, everything changed. I found Vermont coming in strong, and they came right back to me. Then, I found Rhoad Island was the next station up the band, and had an easy contact within a minute later.
I wanted to see whether I could contact each state from my car, and I'm finally done. It's been a long pursuit, because I usually have only a few hours per month available for air time. Now I can focus on DXCC via mobile. I have almost 60 countries confirmed so far. This has also been a long pursuit.
---Michael, NO6O
-
Bill Talanian -
Michael Reynolds, NO6O -
neils