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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RadioSAFE Product Specifications

Requires FCC license granted to local government or health agency (FCC Rules Part 90.242) or by National Telecommunications and Information Administration for federal government agency, or by US Military. Requires FCC Special Temporary Authority (STA) to operate at a power level above 10 watts.

Standard Components
Transmitter (XB.500)
  • Output 500 watts, continuously adjustable.
  • Power level presets: 3.
  • Frequency range: 530kHz to 1710kHz.
  • Output Impedance: 50 ohms unbalanced.
  • Connector type: PL259.
  • Modulator type: pulse duration modulation (PDM).
  • Audio frequency response: +\- 0.5db, 30-10,000Hz .
  • Power consumption: 600 watts at 500-watt 0% modulation; 900 watts at 500-watt 100% continuous sine wave modulation; 120 VAC.
  • Remote control/monitor DB25 Connector.
  • Mechanical and environmental specifications ambient temperature: -10o C to 50o C; humidity.
  • Range 95% max.
  • Size: 12.25” high x 19” wide x 20” deep.
  • Weight 98 lbs.
Transmitter (TR.6000 HQ 5.0)
  • FCC certified for Travelers' Information (TIS) radio applications (Certification B7MTR-6000TIS-WB).
  • Manufactured in the USA.
  • 0-10 watt operation, Class D, duel output devices.
  • Approved for military and federal agencies use on 510-530 kHz, 1610-1710 kHz - Certification J/F 12/07677.
  • Synthesized frequency selection.
  • Frequency stability: +/-20 Hz.
  • Frequency range: 530 to 1710 kHz AM.
  • 5000 Hz audio bandwidth with limiting.
  • Power and audio control relays.
  • Internal monitor speaker with volume control.
  • 24V DC; power consumption 36 watts.
  • 19” rack mount, 1 RU.
Wattmeter (SX.200)

See TechTalk article "Troubleshooting with a Wattmeter."
  • Analog.
  • Design:  passive, inline.
  • Insertion loss: 0.15 dB maximum.
  • Switch between forward and reflected power measurements.
  •  Metering:  5, 20 and 200 watt scales.
  • Peak envelope power and average power displays.
  • UHF/SO239 connectors for antenna and transmitter coax.
  • 50-ohm impedance.
Digital Audio Management System (TMS.020)
  • Browser-based (LAN/WAN) or local control program control.
  • Local message selection via front panel control.
  • File format: MP3, WAV, FLAAC, OGG; (64-128 kbps recommended).
  • network (RJ-45 Port).
  • Memory format: nonvolatile - no battery backup required.
  • Currently playing message displayed on front panel LCD.
  • Message loading via network upload or removable SD card.
  • Memory storage size 32GB minimum.
  • Message lengths: variable. Message playlists may be created and stored.
  • Message order: continuous sequential message play-out based on user-determined order.
  • Messages and playlists may also be triggered by HTML CGI commands.
  • Audio inputs and outputs: 600 ohms; RCA jacks; unbalanced.
  • Power: 120VAC/12VDC (2 watts); 150 ma @ 12VDC.
  • 19” rack mount format; 1 RU.
  • Dimensions: 19” W X 1.75” H X 10” D.

Optional Hybrid Audio Management System for Redundancy with a MGR.021 Voice Player and a DN.1201 Program Mixer  (Compare audio control methods.)

Broadcast Quality Audio Processor (HQ 5.2)
  • Front panel menu with job-wheel setup.
  • Performs AGC, 3-band compression, peak control and output filtering. Has user adjustments for compression, EQ, limiting and program density.
  • DSP limiting offers tight peak control without clipping.
  • USB connector enables fast firmware updates in the field.
  • Distortion: less than 0.02% THD (proof mode).
  • Noise: better than 72dB below the limited ceiling level measured through the appropriate de-emphasis network.
  • Program lines: input – active-balanced XLR analog, -20dBu-+20dBu; output – ative-balanced XLR analog, -15dBu-+12dBu.
  • Latency: 3.5 ms – 4.5 ms.
  • Power requirement: 12VDC at 200 ma.
  • Size and weight: 1.6” ”H x 5.5”W x 5.5”D (1U); 4 lbs.
  • Rack space required: 1RU (1/3 space).
Headphones and Microphone for Recording or Live Broadcasting

  • Style: dynamic, handheld .
  • Frequency response: 50-15,000 Hz.
  • Pickup pattern: cardiod.
  • Output connectors: mic = USB and XLR; headphones = 3.5 mm jack.
  • Inclusions: desk stand, audio output cables.
  • Switch: on/off slide switch.


  • Frequency response: 18-22,000 Hz.
  • Design: closed back, foldable.
  • Earcups: padded.
  • Output cable: 3 meters; ¼” stereo connector with 1/8” adapter.
Audio Recording Software
  • Adobe Audition
High Performance Antenna System (HPR.0990)
  • Power:  up to 270 watts carrier (1700 kHz)/100% modulation; up to 180 watts carrier (530 kHz)/100% modulation.
  • Frequency range:  various versions of the antenna's design allow it to function on any frequency in the 470 to 1800 kHz operating range.
  • Impedance:  10-20 ohms (typical) with 50' tip height and 25-50' radius groundplane (typical).
  • Mounting format:  top of support structure [tower, mast or pole]. Lower 36” of antenna base clamps in insulator mounts which can be attached to a vertical support with a round or flat surface.
  • Type:  center-loaded, bottom-fed vertical, whip-type antenna with adjustable 6- element capacitive top hat and adjustable vertical tuning section. Omni directional. Anodized aluminum finish. Guying ring included.
  • Radiation efficiency range:  530 kHz; 54 mV/m/km - RF 1kW; 1700 kHz: 171 mV/m/km - RF 1kW.
  • Audio bandwidth (2:1 SWR): 530 kHz: +/- 1.5 kHz; 1700 kHz +/- 5.5 kHz.
  • Temperature endurance: -40°C to 85°C.
  • Wind endurance:  greater than 100 MPH, unguyed. Greater than 140 MPH with the addition of guy lines (nonconductive only).
  • Weight of the complete antenna varies with frequency. 30.5 lbs nominal.
  • Mounts with insulators (2): 5.5 lbs total.
  • Overall assembly: five sections plus capacitive hat. Length varies with frequency and tip extension. Typical: 32'. Assembly hardware. Outside diameter of vertical sections taper from 2.5” (lower) to 1.0” (upper). Capacitive hat spoke length varies with frequency.
  • Recommended separation from buildings and structures: 100’ or equal to the height of the structure, whichever is greater.
  • Includes stand-off mounts with insulators, feedline, matching transformer, lightning arrestor and grounding bus in weatherproof cabinets.
  • RF exposure separation: 1 meter minimum recommended for both occupational and controlled environments.
FlexPlane Preassembled Groundplane (PPSF.25)

See TechTalk article "Underground Power: Why Antenna Grounding Is Important, How It Works and Is Installed."
  • 32 elements.
  • 25' radius.
  • Radial wires:  14 AWG, stranded copper (19-27AWG strands per wire); insulated (black).
  • Pigtail:  4 AWG; high flexibility stranded copper, (374-30 AWG strands); 5' length; insulated (black) with bare,  soldered termination.
Coaxial Cable
  • 100' length.
  • RG8.
AC Surge Arrestor with Power Strip, Wiring Harness
Associated Materials
  • Illustrated instruction manual.
  • All wiring, connectors, mounts and hardware.
  • Test equipment: the above-listed wattmeter and a dummy load for antenna tuning and system diagnosis.
Required Utilities
  • 110-volt AC, single-phase/50/60 Hz, less than 1 amp AC operating current (20-amp breaker).
  • LAN/WAN network service.
Commonly Selected Services
Lifetime Remote Technical Support
Factory Configuration, Testing, Antenna Pretuning
StreamCAST Services to Simulcast Programming to PCs and Portable Devices
Frequency Search
Proposed Signal Coverage Map
FCC License and Signal Intensity Waiver Applications
InfoRadio Format Recordings
Additional Options for Special Applications
RadioSAFE Electronics in Wall-Mounted Cabinet
Glossary of Radio Terms
Related Links
RadioSAFE Main Page
Planning Page
Glossary of Radio Terms
Contact Us All Products at a Glance Customer Support Policy All Services Site Index
Corporate Overview For Emergencies FAQs Customer Support Policy Site Map
Why Customers Buy For Health Applications FCC-Permitted Broadcasts FCC Frequencies & Licenses  
Founding & Firsts For Highways Glossary of Radio Terms Installation, Testing, Training
Privacy Policy For Visitor Information News & Stories from the Field Professional Recordings
  For Other Common Applications Operator's Zone Purchase Options
  For License-Free Stations Our Stations across the USA Rentals  
For AM Radio Broadcasters Planning Guide Streaming
For Amateur (HAM) Operators Planning Guide  

©  1983-2024  • Information Station Specialists, Inc. •  All Rights Reserved
PO Box 51, Zeeland, Michigan, USA, 49464-0051, Phone 616.772.2300, Email Us

TRADEMARKS:  2X Signal Booster, ALERT AM Emergency Advisory Radio System, AMReady Broadcast Components, 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, FlexPlane Preassembled Groundplane, Free-Radiate On-Premise Radio Broadcast System, 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, IP.8 Digital Message Player, IP.76 Digital Message Player, ITS.6000 Highway Advisory Radio Network, LIGHTNING LED Changeable Message Sign, Lowdown 630-Meter Band Amateur Radio Antenna, MGR.021 Digital Audio Management System, MXB.22 THEMATCHBOX Impedance Matching Transformer, NX8R Digital Message Player, PPFL PPFS 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, SMR Signal Measurement Radio Receiver, Stealth Sign, StreamCAST Internet Audio Delivery Service, SS.3000 Free-Standing AM Radio Antenna System with Tower, SX.200 Wattmeter, Talking House AM Radio Transmitter, TH.5 InfOspot Transmitter, TMS.020 Digital Audio Management System, TR.6000 Transmitter, TMS.020 Digital Audio Management System, TR.6000 Transmitter Model 15.73, VP.9000 Vertical Profile Antenna Support and Grounding System.

Information Radio Station is a generic term synonymous with Travelers Information Station (TIS), Highway Advisory Radio (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, wattmeter, 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.