Free on RF Workbench
Broadcast site profile
Enter an address or coordinates to see the site's NAD83 and NAD27 coordinates, ground elevation, county and districts, the FM zone and Mississippi side it falls in, and its distance to the Mexican and Canadian borders.
Location
| NAD83 | 39° 50′ 43.1″ N 88° 57′ 13.2″ W39.845306, -88.953667 |
|---|---|
| NAD27 | 39° 50′ 43.0″ N 88° 57′ 12.9″ WNOAA NADCON 5 |
| UTM (NAD27) | UTM Zone 16: 4,412,200.3 m N, 332,856.1 m E |
| Ground elevation | 207.4 m (680 ft) AMSLFCC terrain service, USGS 1 arc-second data |
Census geography
| State | IllinoisGEOID 17 |
|---|---|
| County | Macon CountyGEOID 17115 |
| Place | Decatur cityGEOID 1718823 |
| County subdivision | Decatur townshipGEOID 1711518836 |
| Urban area | Decatur, IL Urban AreaGEOID 22717 |
| Census tract | Census Tract 31GEOID 17115003100 |
| Census block | Block 1048GEOID 171150031001048 |
| Congressional district | Congressional District 13GEOID 1713 · 120th Congressional Districts |
| State senate district | State Senate District 48GEOID 17048 · 2026 State Legislative Districts - Upper |
| State house district | State House District 96GEOID 17096 · 2026 State Legislative Districts - Lower |
| 2020 block population | 0 |
| FCC market areas | CMA230, BEA068, MTA003, BTA109, PEA092FCC Area API: Cellular Market Area, Economic Area, Major and Basic Trading Areas, Partial Economic Area |
FCC rule zones
| FM zone (§73.205) | Zone I (§73.205(a)) |
|---|---|
| Mississippi River | EastNew call signs start with W (§73.3550(e)); FM translators use the §74.1235(b)(1) table |
| Mexican border | 1,545 km (960 mi) |
| Canadian border | 549 km (341 mi) |
More than 320 km from both borders: no international FM coordination limits apply here (§73.207(b), §74.1235(d)).
Next steps for this site
Choosing where to put a new station?
RF Navigator handles spacing, contour studies and the channel search for a site, while the Nexus Broadcast team can carry it through to the FCC filing.
Sources for this data
- Coordinates, address matching and census geography come from the U.S. Census Bureau Geocoder; FCC market areas and block population from the FCC Area API. Elevation of the ground: FCC terrain data. NAD27 and UTM: the National Geodetic Survey at NOAA (NADCON 5).
- FM zones are set by §73.205. The Mississippi River divides K and W call letters (§73.3550(e)) and the power tables for FM translators (§74.1235(b)). FM stations less than 320 km from Mexico or Canada are governed by the international agreements (§73.207(b)); boosters and translators in that zone have separate limits (§74.1235(d)).
- The borders, the river and zone lines are plotted from simplified public map data, so any site near a line is flagged for confirmation.
Intended for planning. Not produced by NOAA, the FCC or the Census Bureau.