Some of the Trimble Community Base Stations on the previous page are operated by the USDA Forest Service. These stations are operated to support GPS use for resource activities, navigation, and mapping activities necessary to manage National Forest Lands. This data is intended to support GPS work at the >1 meter accuracy level (C/A Code data). Reference files at USFS sites are logged in manufactures proprietary .SSF format then compressed to self extracting .EXE files. RINEX file formats are not supported at this time.

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