July 1970 | NTIA Technical Memo ERL TM ITS 242

Coast Guard communication coverage of the Gulf of Mexico at 500 kHz

Leslie A. Berry; Gene G. Ax

Abstract: The area in the Gulf of Mexico covered 85 percent of the time in the noisiest CCIR time block by the Coast Guard is calculated based on standard ground wave propagation and CCIR noise predictions. Most of the Gulf within 300 mile s of the shore is covered except for a region west and south of Florida. The non-Coast Guard station at Tampa covers this region 9 hours per day, The changes in area coverage caused by increasing the power at New Orleans and Galveston to 10 kW, and/or moving the station at Galveston to Corpus Christi are also shown.

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Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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