KDX54: NOAA Weather Radio, Big Rock Ridge
KDX54 broadcasts NOAA Weather Radio on 162.500 MHz (WX6 on most receivers) from Big Rock Ridge, with the transmitter at N. San Francisco Bay, California, at 75 W. The National Weather Service office in San Francisco, CA programs it. It covers 15 counties.
The transmitter and its neighbors
KDX54 (the largest dot) and the transmitters within 100 miles, colored by their status now.
- On the air
- Degraded
- Off the air
The transmitter
- Call sign
- KDX54
- Frequency
- 162.500 MHz (WX6)
- Power
- 75 W
- Status
- On the air
- Station
- Big Rock Ridge
- Transmitter site
- N. San Francisco Bay
- State
- California
- NWS office
- San Francisco, CA
- Location
- 38.0597, -122.6056
Counties covered
Program a SAME receiver with the code of your county. Coverage is NWS’s note of the part of a county the signal reaches.
| County | State | SAME code | Coverage |
|---|---|---|---|
| Contra Costa | California | 006013 | West |
| Marin | California | 006041 | Whole county |
| Napa | California | 006055 | Whole county |
| San Francisco | California | 006075 | Whole county |
| San Mateo | California | 006081 | Whole county |
| Santa Clara | California | 006085 | Whole county |
| Sonoma | California | 006097 | Whole county |
| Sonoma | California | 106097 | Southeast |
| Sonoma | California | 206097 | South |
| Sonoma | California | 306097 | West and south |
| Sonoma | California | 406097 | East and south |
| Sonoma | California | 506097 | Whole county |
| Sonoma | California | 606097 | West |
| Sonoma | California | 706097 | Whole county |
| Sonoma | California | 906097 | Whole county |
Nearby transmitters
More
Weather radio in CaliforniaEvery transmitterThe forecast hereAlerts in force in California
Sources
Transmitters, status and county coverage from the National Weather Service’s NOAA Weather Radio county coverage listing (data). Public domain. Read October 1, 2026 at 4:11 PM UTC; held for an hour. Original at weather.gov. Report an outage to NWS at weather.gov/nwr.