AM-Radio
AM Radio is used to inform and instruct people during an evacuation.
AM Radio is used to inform and instruct people during an evacuation.
This web page details use of AM radio to inform and instruct residents in a wildfire evacuation in real-time.
AM Emergency Radio Stations installed across America: URL
AM Emergency Radio Stations installed in California: URL
Santa Clara County Cities with Emergency Radio Stations. Santa Clara County population 1/1/2025: 1,922,259.
Cupertino (1670 AM) 59,831
Gilroy (1610 AM) 62,205
Los Altos Hills (530 AM) 8,548
Morgan Hill (1610 AM) 46,599
San Jose (1340 AM) 979,415
Saratoga (1680 AM). 31,110
Sunnyvale (1680 AM) 159,673
TOTAL POPULATION IN A CITY WITH AN AM Emergency Radio Transmitter: 1,300,782, which is 67.64% of the county's population.
Note-1: Morgan Hill has an active FCC license but no transmitter.
Note-2: San Jose has additional radio stations: SJSU 1700 AM; SJC Airport: 530 AM.
Information on some AM radio stations for emergency use (and for road conditions and traffic impacts).
Listen to Radio Cupertino live. The website for Radio Cupertino is here.
WQGH344 (Radio Cupertino) is the City of Cupertino's AM radio station, broadcasting on the frequency of 1670 AM. Radio Cupertino provides residents with up-to-date information on city news, community events, construction projects, road conditions, weather forecasts, and emergency preparedness. Cupertino city meetings are also broadcast at various times throughout the week.
In the event of a emergency, tune into Radio Cupertino for the latest information on the nature of the emergency, the impact of the emergency on the community, and instructions for local residents. (This web site also describes transmission over Amazon Alexa smart speakers.)
Radio Cupertino broadcasts 24 hours a day.
This is the loop running on AM 1610 in Gilroy. It is general wildfire advice. It identifies itself as "the City of Gilroy's Emergency Broadcast Station" and notes that it may provide instructions during an evacuation.
"AM Radio 1610 is operated by the City and can be used as a Travelers Information Station or an Emergency Advisory Radio Station." The map at left shows the range of the signal.
City Staff report on 1610 AM radio.
Signal propagation for 1610 AM radio.
Sunnyvale Emergency Preparedness
"Tune to 1680 AM on your portable or car radio for local information during a disaster."
Use of 1680 AM and CERT training exercises is here.
The city of Morgan Hill had an active transmitter atop city hall, until the police station and emergency operations center moved to their new location on Vineyard Drive around 2004, when the equipment was disbanded. The city has a valid FCC license through 11/14/2030, call sign WNUU667, for 1610 AM. The AM radio station is now required for the kind of complex evacuation of Holiday Lake Estates, Morning Sun Terrace and Jackson Oaks, where a fast-onset wildfire can spread through Holiday Lake Estates and move of Jackson Oaks in 3 to 4 hours and it takes 8.5 hours to evacuate the hill. An evacuation can be very complex involving people trapped at home, in over 3,000 cars and on foot near or at temporary refuge areas and through Rosendin Park and Anderson dam. The estimated cost for the transmission equipment is $30,000 to $50,000 after a site survey.
NOTE: Every Valley Water director has at least one city with an AM Radio emergency transmitter.
District 1: John Varela: Gilroy, Morgan Hill (no transmitter), San Jose
District 2: Shiloh Ballard: San Jose
District 3: Richard Santos: San Jose, Sunnyvale
District 4: Jim Beall: San Jose
District 5: Nai Hsueh: Cupertino, San Jose, Saratoga, Sunnyvale
District 6: Tony Estremera: San Jose
District 7: Rebecca Eisenberg: Los Altos Hills, San Jose