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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Audio Distribution to Synchronized Radio Stations
Audio Distribution to Satellite Stations Sample Setup

Related Links

Audio Control Methods for Our Radio Systems

Related Radio Stations

ALERT AM Emergency Advisory Radio System

ITS.6000 Highways Advisory Radio Network

VoiceStar Portable Highway Advisory Radio System

Audio distribution to satellite Information Radio Stations may be accomplished over leased telephone lines, fiber optics or our Wireless Audio Link System. Each of these methods uses continuously available links to distribute the audio in real time, guaranteeing that all stations are broadcasting current message content.
Wireless Audio Link (WAL) System

The Wireless Audio Link (WAL) System, which offers the following advantages:

  • Fully under your ownership and control.
  • No monthly cost to operate.
  • Excellent signal quality.
  • Unaffected by power outages when generators or battery backups are present at the satellite radio locations.
  • Unaffected by weather disruption that can affect phone and fiber lines.
  • Licensed, protected VHF frequencies.

The standard package includes . . .

  • Wireless Audio Link transmitters and receivers.
  • Antennas and mounts.
  • Diagnostic metering.
  • Cable, arrestors & converters.
  • Propagation study.
  • FCC license.

Options include . . .

  • Antenna tower and support poles.
  • Tower-climbing labor.
Corner, Reflector Antenna on Tower 
Corner Reflector-Style Antenna with Tower Mount 


The Wireless Audio Link system is analog based and does not depend on digital or IP-based equipment to function. If satellite stations are fewer than 15 miles apart, we recommend GPS Frequency Stabilization to prevent inter-station interference (heterodyne).Wireless Audio Link range is up to 20 miles, quasi-line-of-sight. Low VHF operating frequencies will accommodate some terrain and foliage.
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

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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 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.