that was a one way transmission while being tracked by what was basically a multi million dollar optical telescope - for something that a teleport operator can afford, in the price range of a large ku or ka-band dish ($150,000 or less), the tech isn't quite there yet.
it wasn't something with two way syn/ack like TCP... On Tue, Feb 23, 2016 at 12:37 PM, Chris Wright <[email protected]> wrote: > LADEE did 622mbps from 385,000km (lunar orbit to earth’s surface) two > years ago. > https://en.wikipedia.org/wiki/Laser_communication_in_space#Flight_tests > > > > Chris Wright > > Network Administrator > > Velociter Wireless > > 209-838-1221 x115 > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Bill Prince > *Sent:* Tuesday, February 23, 2016 11:28 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] Viasat-3 going up > > > > I think that would be a stretch. Getting laser to penetrate even 1 km if > atmosphere is tough, and there is quite a bit more of that going straight > up. > > > bp > > <part15sbs{at}gmail{dot}com> > > > > On 2/23/2016 11:26 AM, Chuck McCown wrote: > > Do any of these newer satellites use laser as uplink? > > > > *From:* Eric Kuhnke <[email protected]> > > *Sent:* Tuesday, February 23, 2016 12:25 PM > > *To:* [email protected] > > *Subject:* Re: [AFMUG] Viasat-3 going up > > > > An o3b terminal is an identical pair or motorized, tracking 1.8, 2.4 or > 3.0 meter sized dishes. Make-before-break connection. There are some good > videos online illustrating how it works. > > On Feb 23, 2016 10:22 AM, "Sean Heskett" <[email protected]> wrote: > > If the satellite isn't in geo-synchronous orbit then how do you stay > locked on to the signal? Do they have a constellation of satellites? > > > > -Sean > > On Tuesday, February 23, 2016, Chris Wright <[email protected]> wrote: > > O3B altitude is 8062km. At that distance, it takes light about 27ms to > travel. Multiply that by 4 (CPE -> Sat -> Gateway -> Sat -> CPE) and add a > couple ms for frame processing, and you’re at 110ms latency to the provider. > > > > Chris Wright > > Network Administrator > > Velociter Wireless > > 209-838-1221 x115 > > > > *From:* Af [mailto:[email protected] <[email protected]>] *On > Behalf Of *Joe Novak > *Sent:* Tuesday, February 23, 2016 7:15 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] Viasat-3 going up > > > > What kind of latency are we talking? Very interesting stuff. > > > > On Mon, Feb 22, 2016 at 3:04 PM, Eric Kuhnke <[email protected]> > wrote: > > The greatest thing currently happening in satellite telecommunications is > not more geostationary ka-band capacity, but the market pricing in > wholesale that has happened due to o3b. For locations anywhere below 45 > degrees latitude o3b provides end to end trunking at a lot less latency, > and lower prices then geostationary systems. Viasat and other owners of > geostationary capacity have been required to drop the monthly recurring > prices for wholesale transponder capacity. > > The big difference being that an o3b terminal is too expensive by far for > an end user, it would be typically used by a medium to large sized Wireless > ISP using point-to-multipoint technology for the individual customers. For > example a WISP on a pacific island nation state that has no submarine fiber > access. > > On Feb 21, 2016 9:13 PM, "Rory Conaway" <[email protected]> wrote: > > > http://www.fastcompany.com/3056618/fast-feed/these-terabit-satellites-will-bring-internet-to-the-remotest-places-on-earth > > > > *Rory Conaway • Triad Wireless • CEO* > > *4226 S. 37th Street • Phoenix • AZ 85040* > > *602-426-0542 <602-426-0542>* > > *[email protected] <[email protected]>* > > *www.triadwireless.net <http://www.triadwireless.net>* > > > > “The ultimate measure of a man is not where he stands in moments of > comfort or convenience, but where he stands at times of challenge or > controversy” – Martin Luther King > > > > > > >
