United States Government Publishing Office publisher pbl distributor dst United States National Archives and Records Administration Office of the Federal Register author aut Government Organization text government publication eng FR Regulatory Information 2014_register executive 2014-03-05 article Notices D09002ee1c7fa5bb6 D09002ee1c7fa5c2e United States Department of Transportation originator org United States Government Agency or Subagency The purpose of this notice is to seek comment from the public and industry regarding plans by the United States Air Force to broadcast pre-operational L2C and L5 civil navigation (CNAV) messages from certain Global Positioning System (GPS) satellites beginning in April 2014. These messages will be formatted in accordance with Interface Specifications IS-GPS-200G and IS-GPS-705C, each dated 31 Jan 2013. However, a pre-operational signal means the availability and other characteristics of the broadcast signal may not comply with all requirements of the relevant Interface Specifications and should be employed at the users' own risk. The Department of Transportation seeks comments on: (a) The benefits, risks, or issues to users from this plan, including comments on the appropriate timeline for broadcasting pre-operational CNAV messages. Comments are requested from industry on: (b) the receiver development benefits and other intended uses of pre-operational signals, and (c) the benefits and potential impacts to users of continuous pre-operational CNAV messages with L2C and L5 signals set healthy. 79 FR 12563 https://www.govinfo.gov/app/details/FR-2014-03-05/2014-04856 2014-04856 fr05mr14-110 4910-HY-P https://www.govinfo.gov/app/details/FR-2014-03-05/2014-04856 https://www.govinfo.gov/content/pkg/FR-2014-03-05/html/2014-04856.htm https://www.govinfo.gov/content/pkg/FR-2014-03-05/pdf/2014-04856.pdf 2 p. 12563 12564 79 FR 12563 Global Positioning System Pre-Operational Civil Navigation; Message Continuous Broadcast; Federal Register Vol. 79, Issue NOTICE 2014-04856 DEPARTMENT OF TRANSPORTATION 2014-04-04 4910-HY-P 2014-04856 Notice; request for public comments.

The purpose of this notice is to seek comment from the public and industry regarding plans by the United States Air Force to broadcast pre-operational L2C and L5 civil navigation (CNAV) messages from certain Global Positioning System (GPS) satellites beginning in April 2014. These messages will be formatted in accordance with Interface Specifications IS-GPS-200G and IS-GPS-705C, each dated 31 Jan 2013. However, a pre-operational signal means the availability and other characteristics of the broadcast signal may not comply with all requirements of the relevant Interface Specifications and should be employed at the users' own risk. The Department of Transportation seeks comments on: (a) The benefits, risks, or issues to users from this plan, including comments on the appropriate timeline for broadcasting pre-operational CNAV messages. Comments are requested from industry on: (b) the receiver development benefits and other intended uses of pre-operational signals, and (c) the benefits and potential impacts to users of continuous pre-operational CNAV messages with L2C and L5 signals set healthy.

Submit comments on or before April 4, 2014. If you have questions on this notice or would like to schedule a discussion, contact Karen L. Van Dyke, Office of the Assistant Secretary for Research and Technology Administration, Director Positioning, Navigation, and Timing and Spectrum Management, telephone 202-366-3180 or email karen.vandyke@dot.gov. If you have questions on viewing or submitting material to the docket, call Barbara Hairston, Docket Operations, telephone 202-366-9826. Global Positioning System Pre-Operational Civil Navigation Message Continuous Broadcast , karen.vandyke@dot.gov http://www.gps.gov/technical/icwg/ http://www.regulations.gov Vol. 79, no. 43 Office of the Federal Register, National Archives and Records Administration 2014-03-05 continuing daily deposited born digital 311 p. Table of Contents: AE 2.7: GS 4.107: AE 2.106: KF70.A2 https://www.govinfo.gov/app/details/FR-2014-03-05 P0b002ee187889dc0 0097-6326 0042-1219 0364-1406 769-004-00000-9 000582072 f:fr05mr14 https://www.govinfo.gov/app/details/FR-2014-03-05 https://www.govinfo.gov/content/pkg/FR-2014-03-05/pdf/FR-2014-03-05.pdf https://www.govinfo.gov/content/pkg/FR-2014-03-05/xml/FR-2014-03-05.xml fdlp 12353 12654 DGPO 2014-03-05 2024-06-03 FR-2014-03-05 machine generated eng FR FR-2014-03-05 79 43