High-speed mobile broadband hopeful, LightSquared released a video yesterday that proves, in fact, that their equipment does interfere with high precision GPS receivers. In the video, LightSquared shows off a work-around alternate GPS antenna which does appear to filter out the interference.
The alternative antenna begs the question, however, who would pay to retro-fit the millions of existing receivers. Moreover, why should owners of existing GPS equipment be expected to retro-fit or replace their equipment in order to benefit a company that stands to make billions of dollars from using radio spectrum which was never intended for terrestrial use, and for which the company paid nothing?
As of this writing, full results of the independent testing by the National Telecommunications and Information Administration which were expected today, have yet to be released.