AM TOWER STRUCTURES IN FLORIDA - FEBRUARY 2017

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Federal Communications Commission

Publication_Date: 20170207

Title: AM TOWER STRUCTURES IN FLORIDA - FEBRUARY 2017

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Washington, DC

Publisher: Federal Communications Commission

Other_Citation_Details: State of Florida

Online_Linkage: https://www.fcc.gov/media/radio/am-query

Description:

Abstract:

This dataset contains the spatial extent of AM tower structures in the state of Florida. AM stands for "Amplitude Modulation", which refers to the means of encoding the audio signal on the carrier frequency. In many countries, AM radio stations are known as "medium wave"(MW) stations. AM stations are also sometimes referred to as "standard broadcast stations", since AM was the first form used to transmit broadcast radio signals to the public. This is an update to the amtow_jun12 layer.

Purpose:

Serve 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 reservation boundaries, FCC licensee data or FCC market boundaries.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20170207

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -87.429040

East_Bounding_Coordinate: -79.872251

North_Bounding_Coordinate: 30.983191

South_Bounding_Coordinate: 24.492815

Keywords:

Theme:

Theme_Keyword_Thesaurus: NONE

Theme_Keyword: utilitiesCommunication

Place:

Place_Keyword: Florida

Access_Constraints: NONE

Use_Constraints:

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government or the Federal Communications Commission (FCC). No warranty expressed or implied is made by the FCC as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the FCC in the use of this data, or related materials.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Federal Communications Commission

Contact_Address:

Address_Type: mailing and physical address

Address: 445 12th St. SW

City: Washington

State_or_Province: D.C.

Postal_Code: 20554

Country: USA

Contact_Voice_Telephone: 888-225-5322

Contact_Electronic_Mail_Address: fccinfo@fcc.gov

Data_Set_Credit: Federal Communications Commission

Native_Data_Set_Environment:

Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4000

Cross_Reference:

Citation_Information:

Other_Citation_Details:

Federal Communications Commission: <http://www.fcc.gov/>
FCC Wireless Telecommunications: https://www.fcc.gov/wireless-telecommunications#block-menu-block-4
FCC Radio Service Code List: <http://www.perconcorp.com/documents/rscode.pdf>
Universal Licensing System Glossary: <http://wireless.fcc.gov/uls/documentation/pa_ddef50.pdf>
AM Station Classes: https://www.fcc.gov/media/radio/am-clear-regional-local-channels

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

GeoPlan relied on the integrity of the attribute information within the original data.

Logical_Consistency_Report:

This data is provided 'as is'. GeoPlan relied on the integrity of the original data layer's topology

Completeness_Report:

This data is provided 'as is' by GeoPlan and is complete to our knowledge.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

This data is provided 'as is' and its horizontal positional accuracy has not been verified by GeoPlan

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

This data is provided 'as is' and its vertical positional accuracy has not been verified by GeoPlan

Lineage:

Source_Information:

Source_Scale_Denominator: Unknown

Type_of_Source_Media:

Source_Citation_Abbreviation: FCC

Source_Contribution: Spatial and Attribute Information

Process_Step:

Process_Description:

In 2012, the FCC stopped releasing its data as spatial data. Downloaded AM Towers using the AM Query Broadcast Station Search. Selected only Florida stations with an output of Text file (no delimiters / no links). Downloaded from (https://www.fcc.gov/media/radio/am-query) in February 2017. Copied all records and pasted them into a text file. Saved as AMTOWER.txt.
- Opened and formatted AMTOWER.txt in Excel. Added field names using amtow_jun12 and Data arrangement for Text file outputs (https://www.fcc.gov/media/radio/am-fm-tv-textlist-key). Saved coordinate fields as LATD, LATM, LATS, LATDIR, LOND, LONM, LONS, and LONDIR - Saved as .csv file - Opened .csv in ArcMap and exported to a dbase table - Added LATDD and LONDD fields using type = double. These fields will be used to house the coordinates in decimal degrees. These field names were chosen to mimic the coordinate fields in amtow_jun12. - Used field calculator to convert coordinate fields from DMS to DD. The equation for latitude (LATDD) was: ( [LATS] /3600) + ( [LATM] /60) + [LATD] The equation for longitude (LONDD) was: ( [LONS] /3600) + ( [LONM] /60) + [LOND] - Generated XY data using the LATDD and LONDD fields. The projection was defined as WGS 1984.
AMTOW shapefile - Projected the event layer to Albers_Harn using project tool and exported out as shapefile - Deleted all fields not present in amtow_jun12 - Added descript field based on LICENSEE - Added FGDLAQDATE based on the date GeoPlan acquired the data - Added a LAT and LON field based on combination of LATD, LATM, LATS, LATDIR, LOND, LONM, LONS, and LONDIR then deleted those field because they are not present in the previous AMTOW shapefile - Restructured table and uppercased all fields
Note: When the FCC generated this data set spatially in the past they limited the lat/long fields to 4 decimals. Now that we are generating the spatial locations the decimals have been left to the default value of the field type of double. The result is a visible shift of 30-36 meters. Although the new points should be more accurate most AM tower locations are actually a collection of multiple towers spread several hundred feet apart so no single point will accurately reflect AM tower locations.

Source_Used_Citation_Abbreviation: GeoPlan

Process_Date: 20170209

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 251

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Albers Conical Equal Area

Albers_Conical_Equal_Area:

Standard_Parallel: 24.000000

Standard_Parallel: 31.500000

Longitude_of_Central_Meridian: -84.000000

Latitude_of_Projection_Origin: 24.000000

False_Easting: 400000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.002048

Ordinate_Resolution: 0.002048

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D_North_American_1983_HARN

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Resolution: 1.000000

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: AMTOW_FEB17

Entity_Type_Definition: AMTOW_FEB17.DBF

Entity_Type_Definition_Source: FCC

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: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: CALLSIGN

Attribute_Definition:

A combination of letters and numbers that identify an FCC license.

Attribute_Definition_Source: FCC

Attribute:

Attribute_Label: FREQUENCY

Attribute_Definition:

AM station frequncy. AM stations occupy the frequencies of 540 kHz to 1700 kHz. These stations are allocated on a non-interference basis.

Attribute_Definition_Source: FCC

Attribute:

Attribute_Label: SERVICE

Attribute_Definition: Service type. AM for all.

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: CLASS

Attribute_Definition:

FCC given code. The AM band frequencies are divided into three categories: Clear, Regional, and Local channels. The allowable classes depend on a station's frequency, in addition to other variables. On the Clear channels certain stations are specifically classified as Class A stations or as Class B stations. The other stations have their class determined by the frequency.

Attribute_Definition_Source: FCC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: A

Enumerated_Domain_Value_Definition:

Class A station is an unlimited time station (that is, it can broadcast 24 hours per day) that operates on a clear channel. The operating power shall not be less than 10 kilowatts (kW) or more than 50 kW.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: B

Enumerated_Domain_Value_Definition:

Class B station is an unlimited time station. Class B stations are authorized to operate with a minimum power of 0.250 kW (250 watts) and a maximum power of 50 kW. (If a Class B station operates with less than 0.250 kW, the RMS must be equal to or greater than 141 mV/m at 1 km for the actual power.) If the station is authorized to operate in the expanded band (1610 to 1700 kHz), the maximum power is 10 kW

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: C

Enumerated_Domain_Value_Definition:

Class C station is an unlimited time station that operates on a local channel. The power shall not be less than 0.25 kW nor more than 1 kW. Class C stations that are licensed to operate with 0.100 kW may continue to operate as licensed

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: D

Enumerated_Domain_Value_Definition:

A Class D station operates either daytime, limited time, or unlimited time with a nighttime power less than 0.250 kW and an equivalent RMS antenna field less than 141 mV/m at 1 km for the actual power. Class D stations shall operate with daytime powers not less than 0.250 kW nor more than 50 kW. NOTE: If a station is an existing daytime-only station, its class will be Class D.

Attribute:

Attribute_Label: STATUS

Attribute_Definition: Undefined by source.

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: CITY

Attribute_Definition: City location of "LICENSEE".

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: STATE

Attribute_Definition: State location of "LICENSEE".

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: COUNTRY

Attribute_Definition: Country location of "LICENSEE".

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: FILENUM

Attribute_Definition: The FCC-assigned file number of the application.

Attribute_Definition_Source: FCC

Attribute:

Attribute_Label: FACID

Attribute_Definition: Facility ID.

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: LAT

Attribute_Definition: Latitude.

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: LON

Attribute_Definition: Longitude.

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: LICENSEE

Attribute_Definition:

Company or organization that holds the legal license from the Federal Communications Commission.

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: LATDD

Attribute_Definition: Latitude in decimal degrees.

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: LONDD

Attribute_Definition: Longitude in decimal degrees.

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: DESCRIPT

Attribute_Definition: GeoPlan added field based on LICENSEE.

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: FGDLAQDATE

Attribute_Definition: The date GeoPlan aquired the data.

Attribute_Definition_Source: GeoPlan

Attribute:

Attribute_Label: AUTOID

Attribute_Definition: Unique ID added by GeoPlan

Attribute_Definition_Source: GeoPlan

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Florida Geographic Data Library (FGDL)

Contact_Person:

Contact_Position:

Contact_Address:

Address_Type: mailing address

Address: 431 Architecture PO Box 115706

City: Gainesville

State_or_Province: Florida

Postal_Code: 32611-5706

Country: United States

Contact_Voice_Telephone:

Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone:

Contact_Electronic_Mail_Address: Web site: <http://www.fgdl.org>

Contact_Electronic_Mail_Address: Technical Support: <http://www.fgdl.org/fgdlfeed.html>

Contact_Electronic_Mail_Address: For FGDL Software: <http://www.fgdl.org/software.html>

Contact_Electronic_Mail_Address:

FGDL Frequently Asked Questions: <http://www.fgdl.org/fgdlfaq.html>

Contact_Electronic_Mail_Address: Mailing list for FGDL: <http://www.fgdl.org/fgdl-l.html>

Hours_of_Service:

Contact_Instructions:

Resource_Description: DOWNLOADABLE DATA

Distribution_Liability:

The Florida Geographic Data Library is a collection of Geospatial Data compiled by the University of Florida GeoPlan Center with support from the Florida Department of Transportation. GIS data available in FGDL is collected from various state, federal, and other agencies (data sources) who are data stewards, producers, or publishers. The data available in FGDL may not be the most current version of the data offered by the data source. University of Florida GeoPlan Center makes no guarantees about the currentness of the data and suggests that data users check with the data source to see if more recent versions of the data exist.
Furthermore, the GIS data available in the FGDL are provided 'as is'. The University of Florida GeoPlan Center makes no warranties, guaranties or representations as to the truth, accuracy or completeness of the data provided by the data sources. The University of Florida GeoPlan Center makes no representations or warranties about the quality or suitability of the materials, either expressly or implied, including but not limited to any implied warranties of merchantability, fitness for a particular purpose, or non-infringement. The University of Florida GeoPlan Center shall not be liable for any damages suffered as a result of using, modifying, contributing or distributing the materials.
A note about data scale:
Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data.
1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger.
Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: <http://geoplan.ufl.edu/education.html>

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 0.007

Technical_Prerequisites:

This data is intended for use with a Geographic Information Systems or Remote Sensing software package.

Metadata_Reference_Information:

Metadata_Date: 20170326

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Federal Communications Commission

Contact_Address:

Address_Type: mailing and physical address

Address: 445 12th St. SW

City: Washington

State_or_Province: D.C.

Postal_Code: 20554

Country: USA

Contact_Voice_Telephone: 888-225-5322

Contact_Electronic_Mail_Address: fccinfo@fcc.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile