Land Mobile Commercial Transmission Towers

Identification Information: Citation:

Citation Information:

Title: Land Mobile Commercial Transmission Towers Geospatial Data Presentation Form: vector digital data Online Linkage: http://fcc.gov/api/content.json

Online Linkage: HIFLD Open Data (https://gii.dhs.gov/hifld/data/open)

Description:

Abstract: This dataset represents Land Mobile Commercial transmission tower locations as recorded by the Federal Communications Commission, extracted from the FCC Licensing Database. This serves as base information for use in GIS systems for general planning, analytical, and research purposes. It is not intended for engineering work or to legally define FCC licensee data or FCC market boundaries. The material in these data and text files are provided as-is. The FCC disclaims all warranties with regard to the contents of these files, including their fitness. In no event shall the FCC be liable for any special, indirect, or consequential damages whatsoever resulting from loss or use, data or profits, whether in connection with the use or performance of the contents of these files, action of contract, negligence, or other action arising out of, or in connection with the use of the contents of these files. It is know that there are some errors in the licensing information - Latitude, Longitude and Ground Elevation data as well as frequency assignment data from which these files were generated.

Purpose: This dataset represents Land Mobile Commercial transmission tower locations as recorded by the Federal Communications Commission, extracted from the FCC Licensing Database.

Supplemental Information: Caution should be exercised by the user of this feature class. This feature class does not contain fields of attribution for MEDS attributes of ZIP, ZIP+4, TELEPHONE (non-PII general switchboard phone number), and COUNTY FIPS. The following fields are only partially populated with actual values beyond “NOT AVAILABLE” (or blank): QZONE: 1% (this is likely a correct population of the value, but this cannot be adequately determined on the lack of adequate explanation in the metadata), TOWREG: 20%, STRUCTYPE: 84%, NEPA: 61%.

LOCADD information is largely directional or locational, rather than an actual address. This layer also includes 11 records that appear to have erroneous locations in the Atlantic Ocean and Pacific Ocean.

Status:

Progress: Complete

Maintenance and Update Frequency: Daily

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -166.513889 East Bounding Coordinate: 145.8075 North Bounding Coordinate: 70.487222 South Bounding Coordinate: 13.278889 Keywords:

Theme:

Theme Keyword Thesaurus: None

Theme Keyword: Mobile

Theme Keyword: FCC

Theme Keyword: Commercial Theme Keyword: Transmission Theme Keyword: Land

Theme Keyword: Tower

Theme Keyword: Licensing Database

Place:

Place Keyword Thesaurus: None Place Keyword: Puerto Rico Place Keyword: Hawaii

Place Keyword: Northern Marianas Place Keyword: US Virgin Islands Place Keyword: Alaska

Place Keyword: CONUS

Place Keyword: Guam

Access Constraints: Access Constraint: None (Public Domain Information)

Use Constraints: Use Constraint: None (Public Use)

Point of Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Federal Communications Commission (FCC)

Data Quality Information: Lineage:

Process Step:

Process Description:

Updated the locations of four points by updating incorrect negative sign information. Standardized letter casing, fixed spelling, and removed included states in the LOCCITY field. Standardized letter casing, abbreviations and punctuation in the LICENSEE field.

Standardized letter casing, spelling, abbreviations and punctuation in the LOCSTATE, LOCADD, LOCCOUNTY, and LOCCITY field. Updated incorrect entries in the LATDIR and LONDIR fields. Standardized capitalization in the STRUCTYPE field. Updated blank attributes in the LOCCOUNTY field to 'NOT AVAILABLE'. Updated blank attributes in the LOCADD field to 'Not Available'. Updated blank attributes in the QZONE, STRUCTYPE and TOWREG fields with 'N/A' due to character restrictions. Updated Gulf of Mexico entries in the LOCCOUNTY field to 'NONE'. PII removed from metadata.

Process Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: HIFLD Support Team

Spatial Data Organization Information: Point and Vector Object Information:

SDTS Terms Description:

Point and Vector Object Count: 54018

Entity and Attribute Information: Detailed Description:

Entity Type:

Entity Type Label: Land Mobile Commercial Transmission Towers

Entity Type Definition Source: FCC

Attribute:

Attribute Label: LONDIR

Attribute Definition: Longitude Direction (1=positive, -1 = negative)

Attribute Definition Source: FCC

Attribute Domain Values:

Enumerated Domain:

Enumerated Domain Value: E

Enumerated Domain:

Enumerated Domain Value: W

Attribute:

Attribute Label: OBJECTID

Attribute Definition: Internal feature number.

Attribute Definition Source: ESRI

Attribute Domain Values:

Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute Label: TOWREG

Attribute Definition: Tower Registration Number

Attribute Definition Source: FCC. Definition for “N/A” added by HIFLD Support Team.

Attribute Domain Values:

Unrepresentable Domain: This field contains text values that are unrepresentable as other domain types. N/A; Denotes missing data that was not present in the source data. However, the missing data may be present in other sources not yet discovered and used in the creation and/or maintenance of this dataset. These records may be populated with valid information in future update cycles.

Attribute:

Attribute Label: SUPSTRUC

Attribute Definition: Supporting Structure Attribute Definition Source: FCC Attribute Domain Values:

Range Domain:

Range Domain Minimum: -6.1 Range Domain Maximum: 625 Attribute Units of Measure: Meters Attribute:

Attribute Label: LAT_DMS

Attribute Definition: Latitude (Degrees, Minutes, Seconds)

Attribute Definition Source: FCC

Attribute Domain Values:

Unrepresentable Domain: This field contains text values that are unrepresentable as other domain types.

Attribute:

Attribute Label: NEPA

Attribute Definition: National Environmental Policy Act (Y/N)

Attribute Definition Source: FCC Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: N Enumerated Domain: Enumerated Domain Value: Y Attribute:

Attribute Label: LIC_ID Attribute Definition: License ID Attribute Definition Source: FCC Attribute Domain Values:

Unrepresentable Domain: This field contains text values that are unrepresentable as other domain types.

Attribute:

Attribute Label: Shape

Attribute Definition: Feature geometry. Attribute Definition Source: ESRI Attribute Domain Values:

Unrepresentable Domain: Coordinates defining the features.

Attribute:

Attribute Label: LATDIR

Attribute Definition: Latittude Direction (1=positive, -1 = negative)

Attribute Definition Source: FCC

Attribute Domain Values:

Enumerated Domain:

Enumerated Domain Value: N

Attribute:

Attribute Label: LOCCOUNTY

Attribute Definition: Location County or Municipio (PR only)

Attribute Definition Source: FCC. Definitions for “NOT AVAILABLE” and "NONE" added by HIFLD Support Team

Attribute Domain Values:

Unrepresentable Domain: This field contains text values that are unrepresentable as other domain types. NOT AVAILABLE; Denotes missing data that was not present in the source data. However, the missing data may be present in other sources not yet discovered and used in the creation and/or maintenance of this dataset. These records may be populated with valid information in future update cycles. NONE; Denotes counties for Gulf of Mexico sites, where counties do not exist.

Attribute:

Attribute Label: LOCADD

Attribute Definition: Location Address

Attribute Definition Source: FCC. Definition for “Not Available” added by HIFLD Support Team.

Attribute Domain Values:

Unrepresentable Domain: This field contains text values that are unrepresentable as other domain types. Not Available; Denotes missing data that was not present in the source data. However, the missing data may be present in other sources not yet discovered and used in the creation and/or maintenance of this dataset. These records may be populated with valid information in future update cycles.

Attribute:

Attribute Label: ALLSTRUC

Attribute Definition: All Structure Height (m)

Attribute Definition Source: FCC

Attribute Domain Values:

Range Domain:

Range Domain Minimum: -6.1 Range Domain Maximum: 4206 Attribute Units of Measure: Meters Attribute:

Attribute Label: QZONE

Attribute Definition: Q Zone

Attribute Definition Source: FCC. Definition for “N/A” added by HIFLD Support Team.

Attribute Domain Values:

Unrepresentable Domain: This field contains text values that are unrepresentable as other domain types. N/A; Denotes missing data that was not present in the source data. However, the missing data may be present in other sources not yet discovered and used in the creation and/or maintenance of this dataset. These records may be populated with valid information in future update cycles.

Attribute:

Attribute Label: LOCCITY Attribute Definition: Location City Attribute Definition Source: FCC Attribute Domain Values:

Unrepresentable Domain: This field contains text values that are unrepresentable as other domain types.

Attribute:

Attribute Label: STRUCTYPE Attribute Definition: Structure Type Attribute Definition Source: FCC Attribute Domain Values: Enumerated Domain:

Enumerated Domain Value: BMAST

Enumerated Domain:

Enumerated Domain Value: BRIDG

Enumerated Domain: Enumerated Domain Value: TANK Enumerated Domain: Enumerated Domain Value: BANT Enumerated Domain: Enumerated Domain Value: B Enumerated Domain: Enumerated Domain Value: BTWR Enumerated Domain: Enumerated Domain Value: BPOLE Enumerated Domain: Enumerated Domain Value: POLE Enumerated Domain: Enumerated Domain Value: BPIPE Enumerated Domain:

Enumerated Domain Value: NNTANN

Enumerated Domain: Enumerated Domain Value: MAST Enumerated Domain:

Enumerated Domain Value: STACK

Enumerated Domain: Enumerated Domain Value: SIGN Enumerated Domain:

Enumerated Domain Value: NTOWER

Enumerated Domain: Enumerated Domain Value: UPOLE Enumerated Domain: Enumerated Domain Value: SILO Enumerated Domain:

Enumerated Domain Value: TOWER

Enumerated Domain: Enumerated Domain Value: TREE

Enumerated Domain:

Enumerated Domain Value: N/A

Enumerated Domain Value Definition: Denotes missing data that was not present in the source data. However, the missing data may be present in other sources not yet discovered and used in the creation and/or maintenance of this dataset. These records may be populated with valid information in future update cycles.

Enumerated Domain Value Definition Source: HIFLD Support Team

Enumerated Domain:

Enumerated Domain Value: PIPE

Enumerated Domain:

Enumerated Domain Value: OTHER

Enumerated Domain:

Enumerated Domain Value: RIG

Attribute:

Attribute Label: LOCSTATE

Attribute Definition: Location State. 'GM' represents Gulf of Mexico.

Attribute Definition Source: United States Postal Service (https://www.usps.com)

Attribute Domain Values:

Codeset Domain:

Codeset Name: Two–Letter State and Possession Abbreviations Codeset Source: United States Postal Service (https://www.usps.com) Attribute:

Attribute Label: CALLSIGN Attribute Definition: Callsign Attribute Definition Source: FCC Attribute Domain Values:

Unrepresentable Domain: This field contains text values that are unrepresentable as other domain types.

Attribute:

Attribute Label: LICENSEE Attribute Definition: Licensee Attribute Definition Source: FCC Attribute Domain Values:

Unrepresentable Domain: This field contains text values that are unrepresentable as other domain types.

Attribute:

Attribute Label: LON_DMS

Attribute Definition: Longitude (Degrees, Minutes, Seconds)

Attribute Definition Source: FCC

Attribute Domain Values:

Unrepresentable Domain: This field contains text values that are unrepresentable as other domain types.

Attribute:

Attribute Label: LOCNUM

Attribute Definition: Location Number Attribute Definition Source: FCC Attribute Domain Values:

Range Domain:

Range Domain Minimum: 1

Range Domain Maximum: 32

Distribution Information: Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: Federal Communications Commission (FCC) Distribution Liability: Distributor assumes no liability for misuse of data. Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: Vector Digital Data Set (Point)

Fees: None. No fees are applicable for obtaining the data set.

Metadata Reference Information: Metadata Review Date: 2015-02-25 Metadata Contact: