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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ALERT AM's Unique Features

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We are the only company in the United States offering the following Emergency Advisory Radio System features, making the ALERT AM System a particularly useful communication tool for reaching motorists with urgent information/instructions.


Our ALERT AM components are manufactured entirely in the USA.


Only our transmitter (TR.6000 HQ5.0) features full 5000 Hz audio bandwidth to comply with new FCC rules that allow for high quality broadcasting. The transmitter employs a modern synthesized frequency system, so that if a frequency change ever is necessary, it can be easily done without component changes or board-level work. This transmitter also utilizes an efficient Class D amplifier, comprised of only two driver devices for highest reliability and is the only such unit manufactured and type-accepted for TIS applications in the United States. Moreover, it is approved for military use on 510-530 kHz, 1610-1700 kHz (Certification: J/F 12/07677). We also provide he HQ5.1 Broadcast Quality Audio Processor to take advantage of new FCC audio-filtering standards for expanded bandwidth TISs (certified by the FCC on February 18, 2016, for exclusive use with the TR.6000 Transmitter). The processor increases broadcast quality, intelligibility and loudness.


The ALERT AM System comes with the ability to air special broadcast messages in conjunction with county-targeted NOAA 'All Hazard' SAME (Specific-Area Message Encoding) notifications, outdoor warning system activations or Emergency Operations Center control panel switches. The NOAA Receiver is field programmable and upgradeable to stay current with 'all hazards' protocols, if they change.


ALERT AM’s audio program can be managed via a standard Ethernet network or via telephone with local-recording redundancy. It can also be controlled locally via front panel controls or microphone / recording. A VHF transceiver may be used for redundancy as well.


An ENcast option allows instant broadcast of text-based alerts issued by your Emergency Notification System (check for compliance) and/or National Weather Service SAME/'All Hazard' system.


If AC power goes out, ALERT AM stations normally run via generator may be controlled via telephone.


The ALERT AM System comes with 3 hours of message recording time and full control of the via push-to-talk transceivers (customers' own transceivers) parallel to and with priority over telephone control, using the same commands, protocols and voice prompts.


We offer ALERT AM customers who belong to AAIRO (a free nonprofit group of Emergency Advisory Radio Stations operators and licensees across the country) free recording services.


Multi-Station ALERT AM systems operate without relying on vulnerable dialed telephone links. The System also offers optional wireless audio link connections for high reliability with no monthly operating charges. The connections do not rely on tele/cell phone lines during emergencies that can prevent satellite AM stations from becoming disconnected, broadcasting the wrong messages. (Wireless audio links operate on ALERT AM's battery backup system, so when power goes down, they stay up.)


ALERT AM's standard black antennas discourage ice buildup and are finished with a special UV-resistant architectural-anodization process to prevent color fading. If installed in adjacent building yards, ALERT AM requires only that a support pole be set. Not required are large, buried, copper-wire groundplane installation or chemical-emitting ground-pipe (hollow rods) burial. Our antennas exclusively include written documentation of safe RF exposure distance per ANSI/IEEE C95.1-1992 standard by a professional engineer (PE).


The ALERT AM Emergency Advisory Radio System can include a VP.9000 Vertical Profile Antenna Support and Grounding System that does not require a groundplane. Major site disturbances such as surface trenching or drilling for the installation of deep ground rods are not required. With the Vertical Profile Antenna Support and Grounding System:  1) the antenna's cables and arrestors are inside the pole for safety and security; 2) theft of copper ground wire is impossible; 3) it is possible to move the system if required; and 4) the aluminum pole is attractive in conjunction with public buildings and may be painted as needed.


ALERT AM works in conjunction with solar-powered flashing advisory signs via communities’ UHF/VHF radio systems to turn on/off beacons remotely. These signs are the key to notification of the community that an emergency message is being broadcast. See the Flashing ALERT Sign webpage.


ALERT AM provides an Uninterruptible Power Source (UPS) standard and a battery backup system capable of keeping the station on the air for a full 4 days. The pack fully recharges in just 7 hours


Our information radio systems use nonproprietary electronic designs, with standard 19" rack-mount hardware for ease of substitution and service. This means that, in the future, you may change components as needed without the requirement to return; i.e., simple wiring diagrams are provided, so you can service equipment yourself, if you choose, or have a third party assist – all our full support.


We provide as diagnostic equipment a Signal Measurement ReceiverTM to measure the radio station’s signal intensity in order to comply with FCC signal strength regulations.


The ALERT AM system is provided with Remote Technical Support and Potential Interference Notification Services for the life the the station. We support today radio stations that first went on the air in the 1980s. Our staff of engineers has more than 60 years of combined experience specifically in the kind of radio technology under which ALERT AM operates.

Contacts 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 Rentals
  For Other Common Applications News from The Source Streaming  
For License-Free Stations Operators' Zone Warranty
  Why Customers Say They Buy

©  1983-2020  • 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 best known 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, AP55 Digital Message Player, ENcast Emergency Notification Broadcast System, FAS6000 Flashing Beacons & Controller, FASTrack Quick-Erect Sign, FlashCAST Internet Broadcast Service, Flashing ALERT Sign System, FlexPlane Factory-Assembled Groundplane, Free-Radiate On-Premise Radio Broadcast System, HearMoreInfo Internet Broadcasts, HPR0990 High Performance Antenna, i A.M. Radio Transmitter, Information Station Specialists, InfoRadio Format, Information Station Classic, Information Station IP, InfOSpot License-Free Radio Station, IP8 Digital Message Player, IP76 Digital Message Player, ITS6000 Highway Advisory Radio Network, LIGHTNING LED Portable Changeable Message Sign, NX.8.R Digital Message Player, Potential Interference Notification Services (PINS), EventCAST Portable Information Radio Service, RadioSAFE Wide Area Emergency Broadcast System, RadioSTAT Portable Emergency Advisory Radio Station, Severe Storm Detector, Signal Measurement Radio Receiver, Stealth Sign, StreamCAST Internet Broadcast Service, SS3000 Free-Standing AM Radio Antenna System with Tower, Stylized ISS Logo, SX200 Wattmeter, Talking House AM Radio Transmitter, TR6000 Transmitter Model HQ5.0, TR6000 Transmitter Model 15.73, VoiceStar Portable Highway Advisory Radio Station (with or without Changeable Message Sign), VP9000 Vertical Profile Antenna Support and Grounding System, Wireless Audio Link.

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.