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 | 37° 44′ 20.0″ N 121° 59′ 42.5″ W37.738889, -121.995139 |
|---|---|
| NAD27 | 37° 44′ 20.3″ N 121° 59′ 38.6″ WNOAA NADCON 5 |
| UTM (NAD27) | UTM Zone 10: 4,177,124.0 m N, 588,633.7 m E |
| Ground elevation | 563.3 m (1,848 ft) AMSLFCC terrain service, USGS 1 arc-second data |
Census geography
| State | CaliforniaGEOID 06 |
|---|---|
| County | Contra Costa CountyGEOID 06013 |
| Place | Norris Canyon CDPGEOID 0651622 |
| County subdivision | Central Contra Costa CCDGEOID 0601390440 |
| Census tract | Census Tract 3451.15GEOID 06013345115 |
| Census block | Block 1003GEOID 060133451151003 |
| Congressional district | Congressional District 10GEOID 0610 · 120th Congressional Districts |
| State senate district | State Senate District 9GEOID 06009 · 2026 State Legislative Districts - Upper |
| State house district | Assembly District 16GEOID 06016 · 2026 State Legislative Districts - Lower |
| 2020 block population | 747 |
| FCC market areas | CMA007, BEA163, MTA004, BTA404, PEA004FCC Area API: Cellular Market Area, Economic Area, Major and Basic Trading Areas, Partial Economic Area |
FCC rule zones
| FM zone (§73.205) | California south of the 40th parallel — Zone I-A (§73.205(b)) |
|---|---|
| Mississippi River | Zone I-AFM translators here use the §74.1235(b)(1) table (Zone I-A) |
| Mexican border | 720 km (448 mi) |
| Canadian border | 1,173 km (729 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.