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Broadcast site profile
Type an address or drop in coordinates. You get the site's coordinates in NAD83 and NAD27, ground elevation, county and districts, which FM zone and side of the Mississippi it's on, and how close it is to the Canadian and Mexican borders.
Location
| NAD83 | 38° 56′ 57.0″ N 77° 21′ 17.0″ W38.949167, -77.354722 |
|---|---|
| NAD27 | 38° 56′ 56.6″ N 77° 21′ 18.0″ WNOAA NADCON 5 |
| UTM (NAD27) | UTM Zone 18: 4,313,553.0 m N, 295,911.8 m E |
| Ground elevation | 139.4 m (457 ft) AMSLFCC terrain service, USGS 1 arc-second data |
Census geography
| State | VirginiaGEOID 51 |
|---|---|
| County | Fairfax CountyGEOID 51059 |
| Place | Reston CDPGEOID 5166672 |
| County subdivision | Hunter Mill districtGEOID 5105993943 |
| Urban area | Washington--Arlington, DC--VA--MD Urban AreaGEOID 92242 |
| Census tract | Census Tract 4823.01GEOID 51059482301 |
| Census block | Block 2000GEOID 510594823012000 |
| Congressional district | Congressional District 11GEOID 5111 · 120th Congressional Districts |
| State senate district | State Senate District 38GEOID 51038 · 2026 State Legislative Districts - Upper |
| State house district | State House District 7GEOID 51007 · 2026 State Legislative Districts - Lower |
| 2020 block population | 771 |
| FCC market areas | CMA008, BEA013, MTA010, BTA461, PEA005FCC 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 | 2,240 km (1,392 mi) |
| Canadian border | 450 km (279 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
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RF Navigator runs the channel search, spacing and contour studies for a site, and Nexus Broadcast can take it from site to FCC filing.
Where this comes from
- Address matching, coordinates and census geography: the U.S. Census Bureau Geocoder. Block population and FCC market areas: the FCC Area API. Ground elevation: the FCC terrain service. NAD27 and UTM: NOAA's National Geodetic Survey (NADCON 5).
- FM zones follow §73.205; K and W call letters follow the Mississippi River (§73.3550(e)), as do the FM translator power tables (§74.1235(b)). Within 320 km of Canada or Mexico, FM stations follow the international agreements (§73.207(b)), and translators and boosters have their own limits (§74.1235(d)).
- Zone lines, the river and the borders are drawn from public map data and generalized, so sites close to a line are flagged to confirm.
For planning. Not a product of the Census Bureau, the FCC or NOAA.