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 Technical Specifications *

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The Overall System
  • Operates according to Federal Communications Commission (FCC) rules, Part 90.242.
  • Achieves a maximum FCC signal level of 2.0 mV/m at 0.93 mile; effective coverage range is three to five miles (28-78 square miles).
  • Operates within the frequency range 530-1710 kHz (operation on 1710 kHz requires waiver).
  • Features audio bandwidth 5000 Hz per new FCC rules.
  • Uses primary programming: IP via Ethernet on LAN/WAN or by USB port as a backup.
  • Provides redundant operation with:
    • Touchtone telephone control via landline or on site or from remote locations.
    • An internal capability for 1,000 dynamic recorded messages and up to 3 hours of recordable time.
    • The ability to accommodate live broadcasts by telephone handset, locally at the station or remotely via dial-up telephone call in.
    • Automatic broadcasts of Emergency Alert System (EAS) and National Weather Service (NWS) 'All Hazard' alerts specific to targeted counties and event codes. When alerts are over, the system can be set to automatically return to normal programming.
    • Continuous broadcasts during programming changes.
    • Predetermined message playlists that key by external tone-alert receiver or relay closure.
    • Two-way redundant control of audio programming in the event of telephone line failure through use of a two-way (Simplex) radio channel with DTMF microphone. Automatic enablement if telephone control ceases to function. Has the same voice prompts and control protocols as when controlled by phone.

  • Includes all electronics, mounts, cable, wiring and connectors with a complete antenna system and factory-assembled groundplane.
  • 110/220-volt AC, single phase/50/60 Hz, less than 1 amp AC operating current, 4-amp maximum AC charging current (20-amp breaker, nonGFI circuit). 
  • Standard business telephone line (“central office” type, shielded).
Standard Package Inclusions - Click below links to view details.
Transmitter (TR.6000 HQ5.0)

The only one manufactured and type-accepted for Travelers Information Station (TIS) applications in the United States. Approved for military use on 510-530 kHz, 1610-1700 kHz (Certification J/F 12/07677).
AC Uninterruptible Power Supply (UPS)  
  • 750VA 600W battery backup.
  • 6 outlets.
  • Interactive UPS offers voltage regulation and battery support plus complete AC surge suppression.
  • 2U rack mount.
  • Max load of 750VA for 4 minutes and a half-load of 375VA for 11 minutes.
  • Full-time pure sine wave output.
  • Maintains regulated 120V nominal output during brownouts and overvoltages from 83 to 147V.
  • Includes 6 UPS supported outlets.
  • Multi-function audible alarms and set of 5 front panel LEDs.
  • High capacity telephone line surge arrestor.
Phone-Based Digital Message Player (NX.8.R) or TMS.020 Digital Audio Management System
'All Hazard' Alerts Received from the National Weather Service
Broadcast Quality Audio Processor (HQ5.1) for increased audio intelligibility and range. 
Security Cabinet - Indoor Style (for building and yards near buildings) 
  • Durable black, textured power-coat finish.
  • Dimensions: 28.0" H x 22.5" W x 18.0" D.
  • Interior space for rack-mounted components:  21.0" H 15.0" D.
  • 200-pound equipment weight capacity.
  • Rack-mount equipment mounting format – 12 rack spaces.
  • 16-gauge steel construction with 1/8" thick laser-cut corner braces.
  • Tool-free quick-mount system for easy, one-person installation of the center section to the back pan on the job site.
  • Windowed front door provides access for control of electronics, key lockable.
  • Secondary service access door provides access to rear of electronic components and wiring. Service access door is key lock and padlock-able.
  • Seismic certified. EIA/TIA compliant.
  • UL listed in the US and Canada.
Security Cabinet - Indoor Style (for yard antenna style setups when battery backup and certain other options are chosen)
  • Dual-door design, 76-inch height (if battery backup), 48” height (w/o battery backup), free standing.
  • Steel construction with black textured powder-coat finish, NEMA, rack-mount style.
  • AC terminal block with GFCI outlet; internal keyed locks, window door.
Wattmeter and Dummy Load for Antenna Tuning and System Diagnosis
All Necessary Wiring, Cabling, Connectors, Mounts and Hardware 
Lifetime Product Support 
Options - Click below links to view details.
GPS Frequency Stabilization for Host/Satellite Station Setups 
4-Day Operational Battery Backup
  • 22A/24V DC regulated power supply/battery charger.
  • LED charge indicators.
  • Digital voltmeter/ammeter.
  • Operational status indicators.
  • Breakers for AC input, battery output.
  • Automatic low-voltage battery and load disconnect, thermal shutdown and recovery, current-limiting and over-voltage protection.
  • 110 or 220 volts AC.
  • Accommodates redundant parallel module for auto switchover if main unit fails.
  • Chassis size: rack mount, 2 rack units height.
  • 4 sealed AGM batteries, 158 AH @ 24VDC, yielding 4 days of operating time, fully recharges in 7 hours.
Security Cabinet - Outdoor Style (for isolated settings)
  • NEMA-3R grade, gasketed, with dual doors, aluminum frame and sheeting.
  • Removable rack cage.
  • Cabinet footprint: 66.5 inches high by 24.125 inches wide by 33 inches deep; 23-inch doors open 90 degrees, 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 ground bus.
  • Cabinet lights activate/deactivate with door opening/closure.
Vertical Profile Antenna Support and Grounding System (VP.9000) 
Signal Measurement Radio Receiver to Test and Ensure FCC Compliance
Broadcast Recording Services 
StreamCASTs to the Internet (HearMoreInfo) 
ENcast Emergency Broadcast Notification System 
Flashing ALERT Sign System 
  * These specifications are subject to change without notice.
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.