Attachment LightSquared - Crovo

This document pretains to SAT-MOD-20101118-00239 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2010111800239_927072

Received & Inspected FISHER, COLLINS JUL 25 201 Terrell A. Fisher, PE., L.S. Earl D. Collins, PE. P & CARTER, INC. FCC Mali R com Charles J. Crovo, Sr., PE., L.S. CIVIL ENGINEERING CONSULTANTS Paul W. Kriebel, P.E. and LAND SURVEYORS ; Mark L. Robel, PL.S. RILY 26. 3614 Ato UVitueoi. PE. Mr. Julius Genachowski Chairman Federal Communications Commission 445 12"" Street SW Washington, DC 20554 Dear Chairman Genachowski: As a licensed Professional Land Surveyor in Maryland, | must express serious concerns regarding the Federal Communications Commission (FCC) granting LightSquared, LLC conditional approval to build a nationwide 4G—LTE wireless broadband network (FCC File No. SAT—MOD—20101118—00239). Early testing by GPS technology leaders, Garmin and Trimble Navigation, demonstrated that LightSquared‘s technology would likely interfere with Global Positioning System (GPS) receivers, degrading their performance in the best case scenario and completely jJamming GPS receivers in the worst case scenario. The Department of Defense, FAA, DHS, NASA, DOI, DOT, DOC, and the Professional Land Surveying and Engineering professions, have all expressed serious reservations in regards to this plan by LightSquared, LLC to build 40,000 ground stations in the U.S. that could cause widespread interference to GPS signals. This network of ground stations will transmit signals within the L—band frequency immediately adjacent to the GPS L1 frequency at more than one billion times the strength of the low—power GPS signal from space. Furthermore;:—each mobile phone using LightSquared‘s wireless service would potentially become a portableGPSJammmg device by jamming GPS receivers in its immediate vicinity. . High—precision GPsS equment used by Land Surveyors and other geomatics professionals costing thousands of dollars per receiver would be more adversely affected than the consumer GPS devices given their inherent design. Literally, tens of thousands of high—precision GPS receivers are used in the United States. GPS technology has transformed the way we build and manage our infrastructure, adding a tremendous level of efficiency to the design, construction, and maintenance of roads, bridges, commercial properties, residential subdivisions, parks, farms, golf courses, etc. GPS has become an essential tool for design professionals and it is imperative that these GPS signals are not jeopardized by broadband technology. This situation has the potential ‘of becoming a tremendous public safety issue and an economical disaster not only for Maryland, but also for the United States ‘as a whole. The members of the Maryland Society of Surveyors urge you to réject the LightSquared application until such time that all tests conclusively demonstrate there is no risk of interference. Sincerely, CENTENNIAL SQUARE OFFICE PARK e 10272 BALTIMORE NATIONAL PIKE e ELLICOTT CITY, MARYLAND 21042 « PHONE (410) 461—2855 FAX (410) 750—3784


Document Created: 2011-09-12 12:18:15
Document Modified: 2011-09-12 12:18:15
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