Information Station Specialists is the best known source of travelers information stations, highway advisory radio, advisory signs and services needed to reach motorists with public service information. Learn more about Information Station Specialists.
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HPR.0990 High Performance AM Radio Antenna, the Heart of RadioSAFE Systems
Related Links


Plannning Guide

Features Compared to Other Info Radio Systems

Case Studies

"Waldo County EMA First to Deploy New Wide-Area Public Information Radio Service," IAEM Feb 2020

"Covering the County when it Counts: an AM
Radio Emergency Broadcast System," ICMA May 2020

Waldo County's Antenna
Wide Area Emergency Radio Broadcast Systems

FCC-Licensed Travelers' Information Station / Highway Advisory Radio
AEL/SEL FEMA Grant Category 04AP-09-ALRT
A RadioSAFE Wide Area Emergency Radio Broadcast System is a community’s safety net – a key resiliency asset that can be called up during a major incident to direct citizens in evacuation, preservation of life and property and/or disaster recovery. The service is licensable by any government entity in the United States and is permitted to transmit any emergency information that local authorities deem necessary to mitigate harm. Are you prepared to use available broadcast channels to directly inform and instruct the public in your county during incidents when other communication and power sources are rendered inoperable? If not, make your community RadioSAFE.

RadioSAFE is available in two formats, detailed below and on the linked planning page.
Application Examples
  • Evacuations.
  • Incident responses / recoveries.
  • Infrastructure failures.
  • Loss of power / communications due to natural or human-initiated disasters.

Above, RadioSAFE (RSF:500.10X) signal coverage of up to 20-mile radius is possible with an emergency authorization from the FCC.

Variables that affect coverage are authorized power level, terrain, ground conductivity and frequency.

Predicted coverage is part of the RadioSAFE engineering documentation package.
Waldo County's Electronics Cabinet
Maximum Range  RadioSAFE RSF:500.10X is a special radio station that typically operates at 10 watts for enhanced 7-10 mile range – until required to ramp up in an emergency. With the substitution of its high power transmitter, the system is capable of signal coverage that blankets an entire county or major city. A signal radius of 20 miles or more is possible. An emergency Special Temporary Authority (STA) must be granted by the Federal Communications Commission to permit initiation of the RadioSAFE service at enhanced power – which may be hundreds of watts. See map, right. See technical specifications.

Enhanced Range  RadioSAFE RSF:10X operates at 10 watts and with expanded field intensity limits (per waiver) to produce a much larger coverage pattern – 7-10-mile radius – than normally permitted by FCC rules. See technical specifications.
Information Station Specialists provides the application documentation for emergency STAs, waivers and other licensing services required. Frequencies that are adequate for RadioSAFE operation are not available universally. Check with us regarding availability in your area.

RadioSAFE Broadcast Systems operate on AM channels because of their nearly universal availability and because AM signals travel a much greater distance than FM signals at a given wattage. AM radio signals have long wavelengths that are less likely to be blocked by terrain and tall buildings. And more importantly, AM antennas can be installed at relatively low profiles (50’), making them relatively inexpensive to install and dramatically less vulnerable in high wind or geophysical events that can render tower-based communications inoperable.
Communication Strategy

During a disaster in which grid power is severed and mobile devices are not functional, a RadioSAFE Broadcast System might be the only means of reliably getting critical information to members of the public, who are likely to have functioning battery-powered radio receivers in their vehicles.

RadioSAFE Broadcast Systems have the capability of staging hundreds of preplanned broadcast messages that can be selected locally or remotely and updated at any time via network. An optional hybrid package adds USB / flash drive redundancy and live / feed multi-channel operation capability as well.

Emergency officials can employ conventional methods of promotion, such as websites, media articles, commercial posters and local signage, on a day-to-day basis to provide visibility for the service so local populations have residual awareness of the special emergency frequency in their specific area. If possible, we recommend that a RadioSAFE station operate at 10-watt power 24/7 and that the public be encouraged to identify it in advance to “set a button” on vehicle radios so they can quickly find the channel when needed.

During emergencies, officials typically alert citizens to the availability of the RadioSAFE service via electronic notification / social media, Portable Changeable Message Signs (PCMS) or flashing beacon / LED signage installed along highly traveled roadways. The higher the public’s awareness of the emergency frequency’s presence, the more likely word-of-mouth will become a powerful ally when its content is critical.
Planning / Pricing

See Planning a RadioSAFE System and / or contact Bill Baker for assistance in planning the best configuration for your setup. Bill can also provide a formal quote. See optional methods of purchasing.

Note:  Because FCC processing time is unpredictable, we recommend that you request licensing and other FCC documentation services from us as soon as you know for sure you will have a station – definitely no later than when you place your radio equipment order.

As you would expect, Information Station Specialists provides a full menu of technical services to help you put and keep ALERT AM system on the air. We are here to help, even with professionally recorded audio messages, so your broadcasts are ready to air as soon as your station is turned on.

Best of all, each system comes with
Remote Technical Support for the life of the station.
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PO Box 51, Zeeland, Michigan, USA, 49464-0051, Phone 616.772.2300, Fax 616.772.2966, Email Form

The USA's go-to source for information radio station equipment, related products and technical services.