What are the implications of not getting the upload to work ? Is there standby memory you check and then swap to the working program ?
---------------------------------------------------------- Andrew Rich Airways Technical Officer Grade 4 Surveillance - RADAR ADS-B Amateur Radio Callsign VK4TEC email: vk4...@tech-software.net web: www.tech-software.net ----- Original Message ----- From: "Mark L. Hammond" <marklhamm...@gmail.com> To: <amsat-bb@amsat.org>; <vk4...@tech-software.net> Sent: Monday, September 14, 2009 8:56 AM Subject: Re: [amsat-bb] AO-51 repeater back in operation > Hi Andrew, > > AO-51 is essentially a "next generation" PACSAT. Each craft runs its own > OS, which are all similar. Google Harold Price NK6K and you'll find this > link: http://www.amsat.org/amsat/sats/nk6k/msatmain.html It gives a few > important tidbits so you can see the general picture of satellites, OS, > file systems, etc. > > The size of the upload depends on the satellite; usually there are > multiple files, and their sizes vary. In the end, it's something under > 1MB in total. Each piece of code adds more functions. So, it's a flying > computer with CPU and memory and the OS and applications have to be > uploaded and started...not a foreign concept for anybody that has > installed an application! > > Most satellites these days will probably use a the 9600 baud "standard" > data rate for uploading. > > When you only get a few minutes to upload/test just a few times each day, > it takes a while to pull the whole thing off using a 9600 baud RF > connection. > > The good news is that Gould is really good at it :) > > 73, > > Mark N8MH > > ___ > > Re: AO-51 repeater back in operation > > > Subject: [amsat-bb] Re: AO-51 repeater back in operation > From: "Andrew Rich" <vk4...@xxxxxxxxxxxxxxxxx> > Date: Mon, 14 Sep 2009 01:22:11 +1000 > > > Could you explain a bit about the software load > > Operating system > > How much you have to upload > > data rates ? > > > ---------------------------------------------------------- > Andrew Rich > Airways Technical Officer Grade 4 > Surveillance - RADAR ADS-B > Amateur Radio Callsign VK4TEC > email: vk4...@tech-software.net > web: www.tech-software.net > ----- Original Message ----- > From: "Gould Smith" <gould...@bellsouth.net> > To: <amsat-bb@amsat.org> > Sent: Monday, September 14, 2009 1:13 AM > Subject: [amsat-bb] AO-51 repeater back in operation > > >>I turned on the main AO-51 repeater this morning (145.92/435.300). The >>software reload continues, the software could crash when the last two >>tasks >>are loaded and activated. >> >> 73, >> Gould, WA4SXM for the Command Team > > > Mark L. Hammond [N8MH] > -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.95/2368 - Release Date: 09/13/09 17:50:00 _______________________________________________ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
