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

ITS6000 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.
Founding & Firsts Audio Control Methods Alert Stations across America FCC Frequencies & Licenses Site Map
Common Applications Case Studies Installation, Testing, Training
Emergency Advisory Radio FAQs Professional Recordings
Features Compared FCC-Permitted Broadcasts Rentals
Highway Advisory Radio Glossary of Radio Termis Streaming
      License-Free Stations News from The Source    
Travelers' Information Stations Operators' Zone
Why Customers Say They Buy

©  1983-2019  • Information Station Specialists, Inc. •  All Rights Reserved
PO Box 51, Zeeland, Michigan, USA, 49464-0051, Phone 616.772.2300, Fax 616.772.2966, Email: info at theRADIOsource dot com

The USA's best known source for Emergency Advisory Radio Stations, Travelers' Information Stations, Highway Advisory Radio & related products/services.

 Trademarks: 2X Signal Booster, ALERT AM Emergency Advisory Radio System, AP55 Digital Message Player, ENcast Emergency Notification Broadcast System, FAS6000 Flashing Beacons & Controller, FASTrack Quick-Erect Sign, Flashing ALERT Sign System, Free-Radiate On-Premise Radio Broadcast System, HearMoreInfo Internet Broadcasts, , 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, NX8R Digital Message Player, Potential Interference Notification Services (PINS), PowerPlane Flex  Factory-Assembled Groundplane, EventCAST Portable Information Radio Service, RadioSAFE Wide-Area Emergency Broadcast System, RadioSTAT Portable Emergency Advisory Radio Station, Signal Measurement Radio Receiver, SpotCAST Internet Broadcast Service, Stealth Sign, StreamCAST Internet Broadcast Service, Stylized ISS Logo, SX200 Watt Meter, Talking House , TR6000 HQ5.0 Transmitter, TR6000 15.73 Transmitter, VP9000 Vertical Profile Antenna System, VoiceStar Portable Highway Advisory Radio Station (with our without Changeable Message Sign), 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.