Frequency
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资源简介：
Current Effective Date: 0901Z 09 Jul 2026 to 0901Z 03 Sep 2026 Frequencies provide radio frequency information. This frequency data is provided as a non-spatial database table and can be used to build a relationship table with the Service feature data. Frequency data information is shown on Enroute charts and published every eight weeks by the U.S. Department of Transportation, Federal Aviation Administration-Aeronautical Information Services.
创建时间：
2017-06-22
