Re: [time-nuts] Lightsquared and a little math

2011-02-04 Thread J. Forster
- > From: Perry Sandeen > Sender: time-nuts-boun...@febo.com > Date: Thu, 3 Feb 2011 22:45:05 > To: time-nuts-requ...@febo.com > Reply-To: Discussion of precise time and frequency measurement > > Subject: [time-nuts] Lightsquared and a little math > > List,

Re: [time-nuts] Lightsquared and a little math

2011-02-04 Thread Ziggy
om >> Reply-To: Discussion of precise time and frequency measurement >> >> Subject: [time-nuts] Lightsquared and a little math >> >> List, >> >> Wrote "The nationwide LightSquared network, consisting of approximately >> 40,000 cellular base s

Re: [time-nuts] Lightsquared and a little math

2011-02-04 Thread William H. Fite
> Date: Thu, 3 Feb 2011 22:45:05 > To: time-nuts-requ...@febo.com > Reply-To: Discussion of precise time and frequency measurement > > Subject: [time-nuts] Lightsquared and a little math > > List, > > Wrote "The nationwide LightSquared network, consisting

Re: [time-nuts] Lightsquared and a little math

2011-02-03 Thread lists
precise time and frequency measurement Subject: [time-nuts] Lightsquared and a little math List, Wrote "The nationwide LightSquared network, consisting of approximately 40,000 cellular base stations, will cover 92 percent of the U.S. population by 2015 You can make book the missing 8 pe

[time-nuts] Lightsquared and a little math

2011-02-03 Thread Perry Sandeen
List, Wrote "The nationwide LightSquared network, consisting of approximately 40,000 cellular base stations, will cover 92 percent of the U.S. population by 2015 You can make book the missing 8 percent will be areas that exclude the farmers and ranchers who provide our food but the left will ma

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Charles P. Steinmetz
Mike wrote: Does anyone know the timing synchronization requirements for LTE? This network may offer a supplement to current GPS/CDMA based time solutions. It has been ages since I had day-to-day familiarity with the LTE documents, so I can't say off the top of my head. Here are a couple of

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Mike S
At 01:45 PM 2/2/2011, Chris Albertson wrote... On Wed, Feb 2, 2011 at 10:36 AM, Stanley Reynolds wrote: > The web site reads like the sat will distribute the internet signal direct to the clients: People will hate this service. Going up to geo-sync adds a noticeable and annoying lag do unavo

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Bob Bownes
> In my view, this technical tone-deafness at the FCC persists because there > has been no engineering expertise or background at the Commission(er) level > since ... well, I'm not sure there ever was, but perhaps in the 1930s-'40s. >  The FCC staff is supposed to provide engineering support, but C

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Charles P. Steinmetz
Sorry, GPS L1 is, of course, 1575.42 MHz (or 1.57542 GHz). Charles Stanley wrote: Wonder if the clients of this network reduce power as cell phones do to increase battery life and reduce interference or they will use a dish on the fixed clients, not that would help with interference from t

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Charles P. Steinmetz
Stanley wrote: Wonder if the clients of this network reduce power as cell phones do to increase battery life and reduce interference or they will use a dish on the fixed clients, not that would help with interference from the sat. The web site reads like the sat will distribute the internet s

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Bob Camp
Hi It certainly will not be "fast" by any standard. Bob -Original Message- From: Chris Albertson Sent: Wednesday, February 02, 2011 1:45 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Lightsquared and a little math On Wed, Feb 2, 201

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Chris Albertson
On Wed, Feb 2, 2011 at 10:36 AM, Stanley Reynolds wrote: > The web site reads > like the sat will distribute the internet signal direct to the clients: People will hate this service. Going up to geo-sync adds a noticeable and annoying lag do unavoidable speed of light round trip time of flight.

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Stanley Reynolds
the clients: http://www.lightsquared.com/what-we-do/technology/ Stanley - Original Message From: Chris Albertson To: Discussion of precise time and frequency measurement Sent: Wed, February 2, 2011 12:09:07 PM Subject: Re: [time-nuts] Lightsquared and a little math > Let'

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Bob Camp
Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Pete Lancashire Sent: Wednesday, February 02, 2011 1:13 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Lightsquared and a little math Go back to my orig po

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Pete Lancashire
Go back to my orig post the FCC has given the go ahead .. to late ? On Wed, Feb 2, 2011 at 9:57 AM, Bob Camp wrote: > Hi > > Let's see, a 13 mile circle is pi r squared = ~ 530 square miles. > 40,000 times 530 is ~ 21 million square miles. > Wikipedia tells me that the area of the US is 3.79 mill

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Bob Camp
ehalf Of Chris Albertson Sent: Wednesday, February 02, 2011 1:09 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Lightsquared and a little math > Let's see, a 13 mile circle is pi r squared = ~ 530 square miles. > 40,000 times 530 is ~ 21 mill

Re: [time-nuts] Lightsquared and a little math

2011-02-02 Thread Chris Albertson
> Let's see, a 13 mile circle is pi r squared = ~ 530 square miles. > 40,000 times 530 is ~ 21 million square miles. > Wikipedia tells me that the area of the US is 3.79 million square miles. By the same logic, all of the office space in New York could not fit in New York. But it does because the

[time-nuts] Lightsquared and a little math

2011-02-02 Thread Bob Camp
Hi Let's see, a 13 mile circle is pi r squared = ~ 530 square miles. 40,000 times 530 is ~ 21 million square miles. Wikipedia tells me that the area of the US is 3.79 million square miles. On that basis, there's not going to be anywhere in the US that you *can* get GPS to fly a plane. Jamming d