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 

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

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.
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
  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, 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