https://tmfassociates.com/blog/2011/03/16/field-of-dreams/ Satellites, spectrum and other stuff Tue, 03 Feb 2026 21:36:32 +0000 hourly 1 http://wordpress.org/?v=3.3.1 https://tmfassociates.com/blog/2011/03/16/field-of-dreams/comment-page-1/#comment-782 TMF Associates MSS blog » Who to sue? Wed, 25 Jan 2012 04:53:53 +0000 http://tmfassociates.com/blog/?p=1575#comment-782 [...] I for one had already blogged about the potential extent of the GPS interference issues in January 2011, based on testing that I had been told about by a major equipment manufacturer. In that case the engineers were so astonished by LightSquared’s proposed power levels that they brought in their personal car and handheld GPS receivers and noted considerable interference many hundreds of meters away from the test transmitter. As a result this company had already concluded that (at the very least) use of the upper band spectrum was infeasible, well before the loan was sold to investors, and it can hardly have been long after that before LightSquared started negotiating with Inmarsat over the revised spectrum plan which was signed on April 25. Indeed my discussions with many knowledgeable people in mid-March (at the Satellite 2011 conference) indicated that everyone (including people with connections to LightSquared) already believed that use of the upper band would never be feasible. [...] [...] I for one had already blogged about the potential extent of the GPS interference issues in January 2011, based on testing that I had been told about by a major equipment manufacturer. In that case the engineers were so astonished by LightSquared’s proposed power levels that they brought in their personal car and handheld GPS receivers and noted considerable interference many hundreds of meters away from the test transmitter. As a result this company had already concluded that (at the very least) use of the upper band spectrum was infeasible, well before the loan was sold to investors, and it can hardly have been long after that before LightSquared started negotiating with Inmarsat over the revised spectrum plan which was signed on April 25. Indeed my discussions with many knowledgeable people in mid-March (at the Satellite 2011 conference) indicated that everyone (including people with connections to LightSquared) already believed that use of the upper band would never be feasible. [...]

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