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High Performance AM Radio Antenna
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RadioSAFE System

Standard Antenna System

High Power plus High Efficiency
This high performance AM radio antenna offers communications professionals the ability to establish an AM broadcast signal capable of reaching greater distances than before possible with antennas of similar design. This high capacity, high efficiency antenna is compact and light-weight, making it easy to ship and install. It is also competitively priced.
Frequency Range Users
Different versions of the antenna's design allow it to function on any AM frequency in the 530 to 1710 kHz range. Field tests prove that this antenna is capable of handling hundreds of watts (conventional TIS antennas only handle 10 watts) and that it can produce a coverage pattern exceeding 20 miles in radius. Common users are emergency managers and associated amateur radio operators who want to reach their publics during times when power, other communications and internet services are compromised. Commercial broadcasters can also benefit by using the High Performance AM Radio Antenna to keep their AM stations on the air temporarily at low power following calamities. And amateur radio enthusiasts who want a solution for special applications that can be installed in confined spaces will benefit.
Travelers' Information Station licenses can easily upgrade to the HPR.0990 Antenna because it fits in the same 1.5” Insulator mounts that their stations’ antenna mounts currently have, though additional mounts may be required. The antenna’s efficiency will allow a 10-watt TIS signal to travel farther than with a conventional TIS antenna. A waiver is required from the FCC if the station’s field intensity would exceed 2.0 mV/m at 1.5 km (0.93 mile).

As a higher wattage antenna as part of the RadioSAFE System, an emergency Special Temporary Assignment (STA) from the FCC is required.

Engineering for the required waivers and STA’s can be supplied by Information Station Specialists.
  • Type:  center-loaded, vertical, whip-type antenna. Omni directional (0-360). 400 watts (530 kHz) to 80 watts. Anodized aluminum finish. Adjustable tip for precise tuning. With 50’ – 32 element groundplane or Unirod grounding, radiation efficiency varies 45 to 95 mV/m/kw.
  • Frequency Range: 470 kHz to 1800 kHz.
  • Mounts: high impact thermoplastic split type, providing 360° support to the antenna; stainless-steel studs, washers and nuts.
  • Temperature endurance: -40°C to 85°C.
  • Wind endurance: minimum 80 miles per hour with ¼” of ice.
  • Weight of the complete antenna including lower base, loading coil form, mid tip pipe and adjustable stainless steel tip: 30 lbs (530 kHz) to 17 lbs (1710 kHz).
  • Overall assembled length: varies with frequency and tip extension required. Typical maximums: 530 kHz; 385” (32 ft). 1710 kHz; 354” (29.5’).
  • Tip: .022" wall, 0.500" OD stainless steel tubing, Type 316, Heat 150907; .625” diameter acrylic tip ball.
  • Mid pipe: 1.5" OD, 1.3" ID tapering to1.050" OD, 0.824" ID, aluminum Type 6063-T832 with 215-R1 black anodized finish (0.8 mil. anodic coating, standard etch).
  • Base pipe: 1.5" OD, 1.3" ID, aluminum Type 6063-T832 with 215-R1 black anodized finish (0.8 mil. anodic coating, standard etch).
  • Loading coil: continuous filament glass fabric, Epoxy G-11; enameled close-wound copper wire coil; 30-mil.
  • Separation from occupied buildings – 100 feet minimum.
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PO Box 51, Zeeland, Michigan, USA, 49464-0051, Phone 616.772.2300, Fax 616.772.2966, Email

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, VP.9000 Vertical Profile Antenna Support and Grounding 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.