tag:blogger.com,1999:blog-8417569397293524933.post1091572659214138582..comments2024-01-25T05:19:11.334-05:00Comments on Everything Is Backwards: How Did LightSquared Get This Far Despite Bad Test Results?Unknownnoreply@blogger.comBlogger4125tag:blogger.com,1999:blog-8417569397293524933.post-22596882559199047402011-10-10T20:45:05.269-04:002011-10-10T20:45:05.269-04:00The band in question is a space to ground link per...The band in question is a space to ground link period. If the FCC thinks they can extend a waver to open the band they need to think again. For a small political payola to give away something of such value. All parties should be thrown in jail. If we ignore the destruction of the entire GPS infrastructure, not saying we should, the new band should be open for bids.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8417569397293524933.post-47884028972838369982011-10-10T12:06:49.728-04:002011-10-10T12:06:49.728-04:00I mostly support President Obama and technical inn...I mostly support President Obama and technical innovations like nationwide broadband, even if some gov't monies are required. It reminds me of early rural electrification. I am very skeptical of claims this is going forward because of Democratic political connections. <br /><br />As an engineer I have <a href="http://bit.ly/LSGPS2" rel="nofollow"> serious questions about the terrestrial component of LightSquared's system</a>. My main question is why do they need so much power to make it work? You can cover a decent area line-of-sight with under 1W effective radiated power. Why so much power?<br /><br />The link above points to a technical post I wrote. The GPS mfrs gave me hard info, while the LightSquared PR firm said they wanted to help but provided no info.CJhttps://www.blogger.com/profile/05824987036580158137noreply@blogger.comtag:blogger.com,1999:blog-8417569397293524933.post-61099490229506993692011-10-04T17:58:03.286-04:002011-10-04T17:58:03.286-04:00LightSquared shuts down GPS receivers because the ...LightSquared shuts down GPS receivers because the powerful signal (15,750 watts, or, maybe ½ that) just right near GPS receivers (up to many miles away) saturates the antenna amplifier in the GPS receiver trying to receive about 300 watts from about 11,000 miles away. No filter on LightSquared transmitters can prevent that. Need a filter on the GPS receiver after the patch before the gain stage to ground out the LightSquared off band signal. Here is ours: http://www.imcsd.com $1200 and the size of a brick and NOT a complete solution. Sanjiv Ahuja has said he has one for 30 cents. We are waiting to see one. Javad says they have a better GPS. We are waiting to see one. Either way, you all get to buy a new GPS.<br /><br />Another way is to alter the LightSquared protocol, to contain "holes" that GPS can listen through. Doug.Smith@lightsquared.com who is Chief Network Officer for LightSquared says "…I do not intend to follow up with you regarding your proposal" and "Please understand we have received hundreds of offers to solve our issue and simply do not have time to engage everyone." That option does not have you all buying a new GPS.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8417569397293524933.post-91991579659051448142011-10-04T07:45:49.548-04:002011-10-04T07:45:49.548-04:00Good work. BTW, I always enjoy your comments at Ac...Good work. BTW, I always enjoy your comments at Ace, but this is really informative. Did you know there is also a Van Jones connection?<br /><br />ChillinAnonymousnoreply@blogger.com