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 Filter HQ5.0
HQ5.0 TIS Audio Filter
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Audio Control Methods for Information Radio Stations

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HQ5.0 AM Broadcast Transmitter

HQ5.1 Broadcast Quality Audio Processor

Designed specifically for use in Travelers Information Service (TIS) radio applications, HQ5.0 Audio Filter meets and exceeds filtering standards for TIS Stations (FCC Rule Section 90.242, amended by the FCC in 2015). Subsequently, the HQ5.0 Audio Filter was certified by the FCC on February 18, 2016, for exclusive use with the TR.6000 Transmitter from Information Station Specialists.
Technical Specifications
  • Eliminates interference to adjacent channels via a sharp-cutoff, low-pass function. Exceeds requirements for adjacent-channel protection, even under adverse conditions.
  • Frequency response:  20 Hz to 5 kHz.
  • Attenuation:  greater than at 1 kHz by minimum of 83 log 10 (f/5) decibels. Above 20 kHz, attenuation greater than 50 db. “f” = frequency in kHz.
  • Input/output: Balanced. Screw terminals with shield through-connection.
  • Chassis:  Diecast aluminum/black textured.
  • Cover:  Diecast aluminum/black textured.
  • Flanged with four cover screws, four rack mounting slots. Moisture seal “O” gasket.
  • Power requirement:  Passive. No power supply required.
  • Size and weight:  1.75”H x 1.52”W x 4.78”L; 4.6 oz.
Bill Baker (phone 616.772.2300, extension 102) can provide a formal quote.
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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 Emergency Advisory Radio Stations, Travelers' Information Stations, Highway Advisory Radio and related 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, Flashing ALERT Sign System, 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, 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, SS3000 Free-Standing AM Radio Antenna System with Tower, Stylized ISS Logo, SX200 Watt Meter, 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.