I can also confirm this anomaly. The only things I can think of are if the TOPR or EPOCH files being distributed on ao27.org are different from the ones the site is actually using, or if Mike has made some tweak in the C++ program that he is running on the site.
I will have my son (author of the Java version) take a look at the ao27.org source code to see if something has been changed.
George, KA3HSW
-----Original Message-----
From: Alan ve4yz@mts.net Sent: Nov 13, 2007 12:38 PM To: 'Angel Peláez, EA4DUT' ea4dut@ure.es, amsat-bb@amsat.org Subject: [amsat-bb] Re: AO-27 schedule issue
I can confirm this. November 13 UTC 19:34:53 WEB vs 19:28:50 JAVA - 6 minutes 3 seconds after updating data in the java scheduler.
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Angel Peláez, EA4DUT Sent: November 13, 2007 10:55 AM To: amsat-bb@amsat.org Subject: [amsat-bb] AO-27 schedule issue
Hello:
I'm a little puzzled with AO-27 schedule as I see a 6 minutes mismatch between the official page and the java applet. Right now (16:26:14 UTC), I see that next event on AO-27 home page is: Next Event UTC => Tue Nov 13 16:45:15 2007 State => 4 Mode => OFF But with the Java I get: Next Event UTC => Tue Nov 13 16:39:13 2007 State => 4 Mode => OFF Note the 6 minutes and 2 seconds lag. Has anybody noted it as well? I get just the same results as with java on an EXCEL sheet I wrote, so I'm not sure if I'm doing something wrong with TOPR and EPOCH data files for it's the first time I see this issue. I always copied and pasted the data into two txt files one for EPOCH and another for TOPR
I will appreciate any feedback and ideas.
73 Angel, EA4DUT
Thanks George for your quick response to this.
On the JAVA 21:09:59 ( WEB 21:16:02 ) Analog ON over NA this afternoon I monitored the switch to digital that follows the 7 minute Analog segment and Analog OFF occurred at 21:16:42. The Java version predicted 21:16:59 - out by only 17 seconds.
I would conclude that the Java version is Okay and the Web is wrong.
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of George Henry Sent: November 13, 2007 1:52 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Re: AO-27 schedule issue
I can also confirm this anomaly. The only things I can think of are if the TOPR or EPOCH files being distributed on ao27.org are different from the ones the site is actually using, or if Mike has made some tweak in the C++ program that he is running on the site.
I will have my son (author of the Java version) take a look at the ao27.org source code to see if something has been changed.
George, KA3HSW
Hi!
On the JAVA 21:09:59 ( WEB 21:16:02 ) Analog ON over NA this afternoon I monitored the switch to digital that follows the 7 minute Analog segment and Analog OFF occurred at 21:16:42. The Java version predicted 21:16:59 - out by only 17 seconds.
I would conclude that the Java version is Okay and the Web is wrong.
For what it's worth, the AO-27 web site was providing the same schedule as the Java program between mid-September (last time the schedule data was uploaded to the satellite) and the end of October. Early this month, possibly on the 1st, the 6-minute discrepancy between schedules appeared. Other than the fact the AO-27 onboard clock runs fast (noted on the AO-27 web site), it appears that the Java program consistently provides the most-accurate schedule.
Issues related to the schedule aside, AO-27 still sounds good. It's been nice to have this satellite working since January, even with its limitations. Its passes fit in nicely between the AO-51 morning and evening passes, with a good turnout for almost every pass.
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/
participants (3)
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Alan -
George Henry -
Patrick STODDARD (WD9EWK/VA7EWK)