Orbcomm, to my knowledge, is data-only and slow, asynchronous data at that. I used them extensively for a vehicle tracking company I ran a while back. I have a basement full of various Orbcomm gear, including three new GSC100 handhelds - anyone want to make me an offer on it? It still works great; in fact, they recently launched a few more birds.
The link to Palmer Station is geostationary, as are most ground stations. I don't know which satellite is used for the Internet/voice traffic. McMurdo and Scott are connected via Telecom New Zealand satellite. See notes herein: http://en.wikipedia.org/wiki/Scott_Base I seem to recall someone telling me that there were experiments with Asterisk at McMurdo. More information would be interesting if anyone has details. JT On Mar 20, 2009, at 2:22 PM, Trixter aka Bret McDanel wrote: > On Fri, 2009-03-20 at 14:39 -0400, Alex Balashov wrote: >> This I know; I was wondering about specifics. > > > I think orbcomm has some coverage of that area as well. They claimed > 98% of the earth most of the time and 2 minutes until one pops up in > an > uncovered area. > > You can always look for keplerian elements of telecom satellites and > see > which are in polar orbit and which would go down that far. Some > geostationary (longer delay not typically used for voice) may be > reachable with a larger gain antenna (read bigger parabolic). > > NASA offers "jtrack" free which is a web based tracking system for > satellites (they already have the keplerian elements for many up > there) > and I think google earth also has them, so you can look for networks > that can at least make it reasonable and rule out the rest. > > Then its an issue of who has what gear specifically. > > I am assuming of course you already ruled out an easier way to find > who > is doing what, using search engines ... > > Google seemed to indicate that "telecast fiber systems inc" linked > antartica for a telecast, perhaps they are using the surplus bandwidth > for some voice. > > There are rumors that GBLX has a satellite link there > http://www.globalcrossing.com/news/2008/june/05.aspx > > > I am sure a fairly simple google query would return even more > information, perhaps > http://www.google.com/search?hl=en&q=antarctica > +telecommunications&btnG=Search > > > > -- > Trixter http://www.0xdecafbad.com Bret McDanel > pgp key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8AE5C721 > > _______________________________________________ > --Bandwidth and Colocation Provided by http://www.api-digital.com-- > > asterisk-biz mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-biz --- John Todd email:[email protected] Digium, Inc. | Asterisk Open Source Community Director 445 Jan Davis Drive NW - Huntsville AL 35806 - USA direct: +1-256-428-6083 http://www.digium.com/ _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-biz mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-biz
