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.
               Information Station Specialists website 

Emergency Advisory Radio System

FCC-Licensed Travelers' Information Station / Highway Advisory Radio
AEL/SEL FEMA Grant Category 04AP-09-ALRT
Customer Reviews

September 18, 2019
“Thank you for making this a very smooth experience. You guys are top notch!"
Rob Balbuena
IT Department
City of Saratoga, CALA

January 22, 2018
“St. Charles Parish has had no issues with the AM Radio station your company installed. We've been at it for 8 years and the system never really had any complications. For that, we thank you!...We appreciate everything you guys have done for us."
Steve Sirmon
EM Coordinator
St. Charles Parish, LA

Related Links

Print an ALERT AM brochure.

Compare ALERT AM features with our other radio systems.

Plan your ALERT AM System.

See Technical Specifications.

See our other emergency advisory products

When it all goes down, ALERT AM stays up.
Hundreds of communities and transportation departments across America operate ALERT AM Emergency Advisory Radio Stations to tell citizens what to do during highway travel and incidents that threaten life and property.

No power? No internet? No problem. With the ALERT AM system, listeners receive up-to-the-minute reports and instructions across a 3-5 mile radius (25-75 square-mile area) with a level of detail that makes the broadcasts invaluable.

During non-emergency times, officials use the stations to inform motorists of street repairs, traffic constraints, travel advisories, city history and visitor information.

Information Station Specialists is the sole provider of ALERT AM in the United States and offers 24 / 7 remote technical support for the life of the product.

The below capabilities establish the ALERT AM system as a unique communication tool that produces effective public response and appreciation, 24/7.
Standard Package Options (with Standard Package or as Upgrades)
  • Signal Measurement Radio Receiver to verify FCC radio signal compliance regularly.
  • Four-day operational battery backup to keep the system on the air during power outages.
  • Outdoor security cabinet for isolated settings. NEMA-3R grade, gasketed, with dual doors, aluminum frame and sheeting. Removable rack cage. Size: 66.5"H x 24.125"W x 33"D; 23" doors open 90○, front and back. 332 / 334 signal cabinet style. Dual internal locks and locking handles on dual doors. Fan / vent / filter, thermostatically controlled. AC power service panel and groundbus. Cabinet lights activate / deactivate with door opening / closure.
  • Optional USB / network-based audio control.
  • StreamCASTs to broadcast messages to smartphones, tablets and laptops that boosts indoor and out-of-area listening.
  • Vertical Profile Antenna Support and Grounding System, an efficient hurricane-rated, ANSI / TIA-compliant antenna solution that saves space and installation time and is secure and attractive.
  •  GPS frequency stabilization that allows synch of multiple stations to effectively enlarge coverage.
  • Flashing ALERT Signs to instruct motorists to tune to emergency stations when beacons flash.
See the Technical Specifications webpage for details.
Who operates ALERT AM systems?
Municipalities (for example, cities, counties, townships, boroughs, towns and villages departments of public safety, emergency management, public health and public information).

Government Agencies
(for example, departments of transportation, bridge authorities, emergency management and public health departments). 

Points of Entry: (for example, airports, border protection, port authorities).

Universities and Colleges.



                                                                        See Alert Stations across America - state by state.

Office of Emergency Management
Chesterfield, VA
Message Control
The ALERT AM broadcast program can be controlled over a network, USB, landline/cellphone or via a two-way transceiver provided by the operator. Two redundant voice systems, both operable locally or remotely, provide full audio system control which continues to function should telco, network or building access would be lost.*

The ALERT AM system allows the operator to pre-record messages for quick broadcast as anticipated emergency scenarios present themselves.

Broadcasts may also be triggered by ancillary devices, i.e., siren-system closures, switches or other external sources. This allows ALERT AM to quickly switch from broadcasting general information to specific emergency information if disaster strikes. When the National Weather Service issues all-hazard Emergency Alert System alerts for designated counties, they are broadcast automatically, interrupting standard programming. ALERT AM also allows the operator to lock out NOAA alerts if desired. Broadcasting live is easy with the push of a button and can be effected at the radio station itself or remotely from any telephone. An audio processor is onboard to boost ALERT AM’s audio quality and receivable range.

ALERT AM’s digital message players can be stocked with pre-recorded emergency management messages prepared by our professional announcers. to illustrate what’s possible within the system. See free or commissioned recording services.

(*) Compare the capabilities of ALERT AM's NX8R and TMS.020 voice systems here.
Antenna Styles
The most common formats are described below. Click the thumbnail images on the right to see an example of each.

Yard Style: ALERT AM's antenna may be installed at a building with the electronics securely indoors and the antenna pole and groundplane located in the adjacent yard, connected by a coaxial cable. See a Yard-Style Illustration This style is a recommended first choice because it is most economical and affords the greatest security for equipment. A 50’ separation from buildings is recommended. We can even provide the mounting pole for yard areas with limited room grounding.

Roof Style (flat): If no earth surface location is available, a flat building roof may be your best choice for antenna installation. We can provide an installation package which requires no roof penetrations.

Isolated Style: At remote locations where there is no building, a weatherproof cabinet containing the electronics is attached to the antenna support pole. The location must have electrical power and, if equipment is to be remotely controlled, telephone or network service.

ALERT AM can be installed by the buyer, his agent or as a service of Information Station Specialists. Included in the package is the FCC type-accepted transmitter, digital message system, cabinets, antenna, PowerPlane preassembled groundplane, lightning arrestors, cables, connectors, mounts, hardware and illustrated instructions.  
Planning and Purchasing Your System
We provide a full menu of technical services to help you put and keep your ALERT AM station(s) on the air. We will help plan and implement your station, including frequency and site selection, FCC licensing, installation, staff training and the FCC-required field survey and documentation. Even professionally recorded audio messages are available, so your broadcast is ready to put on the air as soon as the station is turned on. Best of all, each system comes with remote technical support for the life of the station.

See typical ALERT AM planning steps and/or contact Bill Baker for a recommendation on the best setup for your intended application. Bill can also supply related pricing. See also Purchasing Our Systems, Components and Services.

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.

or extended range emergency broadcasting, see RadioSAFE Wide Area Emergency Broadcast Radio Systems, which offer coverage areas of a 5 to 20+ mile radius. The Information Station is a lower cost alternative with many of the same messaging capabilities as ALERT AM but without the specialized 'all hazard' broadcast capability, four-day operational battery backup and GPS frequency stabilization options described above.
Contact Us All Products at a Glance Alert Stations across the USA Customer Support Policy Site Map
Customer Support Policy For Emergencies Case Studies FCC Frequencies & Licenses
Founding & Firsts For Health Applications FAQs Installation, Testing, Training
Privacy Policy For Highways FCC-Permitted Broadcasts Professional Recordings
For Visitor Information Glossary of Radio Terms Purchase Options
  For Other Common Applications News from The Source Rentals  
For License-Free Stations Operators' Zone Streaming
  Planning Guide
    Why Customers Say They Buy    

©  1983-2021  • Information Station Specialists, Inc. •  All Rights Reserved
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.

Trademarks: 2X Signal Booster, ALERT AM Emergency Advisory Radio System, ANXX AM Radio Antenna, AP.55 Digital Message Player, ENcast Emergency Notification Broadcast System, EventCAST Portable Information Radio Service, FAS.6000 Flashing Beacons & Controller, FASTrack Quick-Erect Sign, FlashCAST Internet Broadcast Service, Flashing ALERT Sign System, Free-Radiate On-Premise Radio Broadcast System, HearMoreInfo Internet Broadcasts, HPR.0990 High Performance Antenna, i A.M. Radio Transmitter, Information Station Specialists, InfoRadio Format, Information Station Classic, Information Station IP, Information Station USB, InfOSpot AM Radio Transmitter Station, InfOspot Drive-Thru AM Radio Station, IP.8 Digital Message Player, IP.76 Digital Message Player, ITS.6000 Highway Advisory Radio Network, MGR.021 Digital Audio Management System, LIGHTNING LED Changeable Message Sign, NX8R Digital Message Player, PowerPlane Preassembled Groundplane, RadioSAFE Wide Area Emergency Broadcast System, RadioSTAT Portable Emergency Advisory Radio Station, RE 2.5 Range Extender Outdoor Antenna and Tuner, RESPONDER 1 Portable Highway Advisory Radio System, RoadRunnR Portable Highway Advisory Radio System, SSD.20 Severe Storm Detector, Signal Measurement Radio Receiver, Stealth Sign, StreamCAST Internet Broadcast Service, SS.3000 Free-Standing AM Radio Antenna System with Tower, SX.200 Wattmeter, Talking House AM Radio Transmitter, TH.5 InfOspot Transmitter, TR.6000 Transmitter Model HQ 5.0, TMS.020 Digital Audio Management System, TR.6000 Transmitter Model 15.73, VoiceStar Portable Highway Advisory Radio Station (with or without Changeable Message Sign), VP.9000 Vertical Profile Antenna Support and Grounding System.

Information Radio Stations is a generic term synonymous with Travelers Information Stations (TIS), Highway Advisory Radio Stations (HAR) / Highway Information Systems & Low Power Radio Stations (LPR). Operation of the stations is governed by FCC Part 90.242 Rules. A FCC license is required. Information Radio Stations may be fixed or portable. Subcomponents may include transmitter, antenna and ground system, digital voice player, wateter, cabinet with conventional or Corbin locks, lightning arrestors for RF, power and telephone lines, coaxial cable. Most stations employ black maximized antennas to discourage ice accumulation and security measures to prevent unauthorized program access. Options include synchronization, battery backup, solar power, remote programming by local, network or telco, multi-station audio distribution via RF or LAN / WAN or wireless network