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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 | 46° 40′ 27.8″ N 112° 01′ 08.0″ W46.674389, -112.018889 |
|---|---|
| NAD27 | 46° 40′ 28.0″ N 112° 01′ 05.0″ WNOAA NADCON 5 |
| UTM (NAD27) | UTM Zone 12: 5,169,273.1 m N, 422,130.5 m E |
| Ground elevation | 1,128.7 m (3,703 ft) AMSLFCC terrain service, USGS 1 arc-second data |
Census geography
| State | MontanaGEOID 30 |
|---|---|
| County | Lewis and Clark CountyGEOID 30049 |
| Place | Helena Valley West Central CDPGEOID 3035637 |
| County subdivision | Helena CCDGEOID 3004991722 |
| Census tract | Census Tract 4GEOID 30049000400 |
| Census block | Block 3001GEOID 300490004003001 |
| Congressional district | Congressional District 2GEOID 3002 · 120th Congressional Districts |
| State senate district | State Senate District 41GEOID 30041 · 2026 State Legislative Districts - Upper |
| State house district | State House District 81GEOID 30081 · 2026 State Legislative Districts - Lower |
| 2020 block population | 121 |
| FCC market areas | CMA527, BEA146, MTA042, BTA188, PEA158FCC Area API: Cellular Market Area, Economic Area, Major and Basic Trading Areas, Partial Economic Area |
FCC rule zones
| FM zone (§73.205) | Zone II (§73.205(c)) |
|---|---|
| Mississippi River | WestNew call signs start with K (§73.3550(e)); FM translators use the §74.1235(b)(2) table |
| Mexican border | 1,566 km (973 mi) |
| Canadian border | 258 km (160 mi) |
- Within 320 km of Canada: FM stations follow the 1991 U.S.-Canada FM Agreement (§73.207(b)(2)); translators and boosters have the §74.1235(d)(3) limit.
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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.