Founded in 1983, Information Station Specialists is the USA's best
known source for Information Radio Stations (TIS/HAR), advisory
the specialized services required to
transmit spoken messages to citizens − the only such source
providing products entirely made in America.
The TR6000 HQ5.0
AM Broadcast Transmitter represents an
aggressive advance in design, signaling a new
era in information radio broadcasting. Here are
the high points:
TR6000 HQ5.0’s high quality compander circuitry
manages the output, providing a level of audio
processing never before possible in a
limited-area AM transmitter. In short, a program
broadcast by the TR6000 HQ5.0 sounds great, with
excellent intelligibility resulting from full 5000 Hz
TR6000 HQ5.0’s RF amplifier operates on “Class D”
design, delivering its product using 1/3 the
power of conventional limited area AM
transmitters. The resulting decrease in the size
of the solar generator and battery systems
lowers the cost to procure, operate and maintain
radio systems employing the TR6000 HQ5.0. Defeat-able
LED operation reduces power utilization even
further. With its integrated design, the TR6000
prices more efficiently than fully optioned
transmitters of the past. Finally, the TR6000
slim size offers efficiency in space. Its
chassis is only 20% the size of older-style
transmitters. High Reliability
TR6000 HQ5.0 is the only Class D transmitter on the
market today that generates its signal using
only two output devices. This critical design
difference makes the TR6000 HQ5.0 much more reliable
in operation than its predecessors. With all
components − RF, power, control and audio −
and protected by a fully regulated power supply,
reliability is further enhanced. Because the
TR6000 HQ5.0 is capable of outputting wattages in
excess of 40 watts, running at fewer than 10
watts for TIS and HAR allows it to operate at a
fraction of it capacity, extending its useful
TR6000 HQ5.0 can operate on any AM frequency without a
crystal change. A technician can modify its
frequency on the bench, conveniently. The unit
can mount in a 19” rack, on a panel or on a
shelf, allowing TR6000 HQ5.0 to operate in virtually
any physical environment. Its compact size (one
rack-unit in height) allows it to fit almost
TR6000 HQ5.0 includes all the functions you need in
one package. A convenient external front panel
controls include LED wattmeter and modulation
meter, power and modulation controls, power and
meter switches. The TR6000 HQ5.0 is capable of
precision RF output by two styles of on-board
oscillators or by an external reference
Integral 5000 Hz filter produces
full-bandwidth audio. The filter is
defeat-able to accommodate addition of
external audio processing for enhanced
loudness, clarity and range. See HQ5.1
Broadcast Quality Audio Processor, linked
0-10-watt operation, Class D, high
efficiency output; internal components rated
to 3 times operating wattage, utilizing 2
Federal Communications Commission certified
for Travelers Information Service in the
United States under Part 90.242.,
Certification Number B7MTR-6000TIS-WB.
Manufactured in compliance with Class-3
Approved for military and federal agencies
use on 510-530 kHz, 1610-1710 kHz -
Certification: J/F 12/07677.
Integral LED wattage and VU reference
Remote broadcast monitoring via output
Remote transmitter control relay.
Synthesized frequency selection.
Defeat-able LED operation to save power.
Internal monitor speaker with volume control
driven by detector circuit to provide
positive modulation indication.
24V DC, fully regulated power supply.
Frequency range: 530 to 1710 kHz AM.
Frequency stability +/-20 Hz.
Continuously adjustable power and audio
modulation controls, externally accessible
on front panel.
Tunable to European 9kHz and other channel
Tunable series filter on RF output.
Audio distortion: less than 1.2%, 100 Hz to
Audio frequency response: +/- 3 dB 50
Hz-12,000 Hz; +/- 3 dB 50 Hz - 5000 Hz with
Noise level: 70 dB below 95% modulation
level, 100 Hz to 5 kHz.
Modulation: 99%, -40 dB to +20 dB.
Temperature: -40 to +85 degrees Celsius.
Humidity: 95% (non-condensing).
External audio, power and synchronization
Relays for external control of power and to
External PL-259 UHF style RF output.
- 10.2-20 KHz – greater than 25 dB below
unmodulated carrier. - 20-30 KHz – greater than 35 dB below
unmodulated carrier. - 30-60 KHz – greater than [5+1 dB/kHz] below
unmodulated carrier. - 60 KHz + – greater than 65 dB below
Harmonic attenuation: greater than 51
dB below carrier.
US Patents: PowerPlane Flex Factory-Assembled Groundplane (5,495,261),
Vertical Profile Antenna System (7,027,008).
Trademarks: 2XTM Signal
Booster, ALERT AMTM
Emergency Advisory Radio System, AP55TM
Digital Message Player, ENcastTM
Emergency Notification Broadcast System, FAS6000TM
Flashing Beacons & Controller, FASTrackTM
Quick-Erect Sign, Flashing ALERTTM
Sign System, HearMoreInfoSM
Internet Broadcasts, Information Station Specialists, InfoRadioTM
Format, Information Station ClassicTM,
Information Station IPTM,
Radio Station, IP8TM Digital
Message Player, IP76TM
Digital Message Player, ITS6000TM
Highway Advisory Radio Network, LightningTM
LED Portable Changeable Message Sign, NX8RTM
Digital Message Player, OP2200TM
On-Premise Radio Broadcast System, Potential Interference Notification
ServicesTM (PINS), Power
Loss Notification ModuleTM,
Factory-Assembled Groundplane, PowerSTATTM
Portable Power Source, evINFOSM
Portable Information Radio Service, RadioSTATTM
Portable Emergency Advisory Radio Station, RoadRunnR®
Portable Highway Advisory Radio Station, Signal Measurement RadioTM
Internet Broadcast Service, StealthTM
Sign, StreamCastSM Internet
Broadcast Service, Stylized ISS LogoTM,
SX200TM Wattmeter, TR6000
Vertical Profile Antenna System, VoiceStarTM
Portable Highway Advisory Radio Station (with our without Changeable
Message Sign), Wireless Audio LinkTM.
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, 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.