Free from Nexus Broadcast
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 | 37° 54′ 10.7″ N 122° 04′ 32.8″ W37.902972, -122.075778 |
|---|---|
| NAD27 | 37° 54′ 11.0″ N 122° 04′ 28.9″ WNOAA NADCON 5 |
| UTM (NAD27) | UTM Zone 10: 4,195,256.2 m N, 581,348.2 m E |
| Ground elevation | 120.2 m (394 ft) AMSLFCC terrain service, USGS 1 arc-second data |
Census geography
| State | CaliforniaGEOID 06 |
|---|---|
| County | Contra Costa CountyGEOID 06013 |
| Place | Walnut Creek cityGEOID 0683346 |
| County subdivision | Central Contra Costa CCDGEOID 0601390440 |
| Urban area | Concord--Walnut Creek, CA Urban AreaGEOID 19504 |
| Census tract | Census Tract 3400.04GEOID 06013340004 |
| Census block | Block 2009GEOID 060133400042009 |
| 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 | 115 |
| 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 | 739 km (459 mi) |
| Canadian border | 1,154 km (717 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
Picking a site for a new station?
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.