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.
standard antenna system produces a signal
intensity of 2.0 mV/m at 1.5 km, the FCC maximum
field level. That signal is typically strong
enough to erect signs for alerting listeners at
3 to 5 miles. The antenna may be mounted atop a
square or round pole of wood, metal or
fiberglass. This antenna system is packaged
with a factory-wired groundplane, pole mounts
and insulators, a cabinet-protected lightning
arrestor system and ground bus for lightning
dissipation and groundplane connection.
Components include . . .
Antenna Mount and Insulators
A galvanized-steel mount allows the
antenna to be attached to any type of pole,
minimum 6" diameter or 6" square. Includes
split-plastic insulator mounts and
Lightning Arrestor, Enclosure and Ground Bus
Provided in a NEMA-4 cabinet, the lightning
arrestor is bonded to an aluminum panel, which
serves as support for lightning grounding and
groundplane connection clamps.
A groundplane is the copper wire part
of the antenna system buried beneath the antenna
support. Our preassembled PowerPlaneTM Groundplane is placed in a 6"-to-12" excavation
that extends outward 10 to 20 feet (depending on
frequency) in all directions from the pad or
pole base; it is covered with backfill. The
groundplane consists of a central ring of #4
bare copper stranded wire with 62 radials that
extend outward in a circular pattern. See
how it's typically installed in this TechTalk
Type: whip (vertically polarized, center loaded,
Power rating: 25 watts.
Length: 15 to 25 feet (specifications vary with
frequency of antenna).
Weight: 8 to 12 pounds (specifications vary with
frequency of antenna).
Wind rating: antennas 1230 kHz and above 100
mph, 80 miles per hour with ¼ radial ice;
antennas 1220 kHz and below 80 miles per hour,
50 miles per hour with ¼ radial ice.
Assembly: 4 sections - base, coil, midtip and
Position of loading coil: center section.
Joints: sleeves with locking. screws, sliding
tip with locking nut.
Temperature: -40 degrees C to 85 degrees C.
Base pipes: aluminum construction, black finish
color to discourage ice buildup; UV-resistant
finish; architectural-anodization process #801;
Coil: wound with copper enameled wire in white
vinyl shrink tubing, 2-inch diameter.
Adjustable tip: stainless steel with locking
nut, adjustable for SWR optimization, 0.5-inch
Includes written documentation of safe
RF exposure distance per ANSI/IEEE
C95.1-1992 standard by a professional
Lightning Arrestor System
Provided in a
weatherproof NEMA4 cabinet, arrestor bonded
to an aluminum panel that supports the
lightning grounding and groundplane
Capacity of 50,000
Clamping speed of less than
2 UHF connectors.
flange ground connection.
Quantity: single PowerPlane Groundplane System,
Radials in system: 60 to 120 (specifications
vary with frequency of antenna).
Radial length: 10 to 20 feet each
(specifications vary with frequency of antenna).
Radial size: #12 bare solid copper wire.
Bonding method: silver solder brazing with
double weather resistant coating.
Bonding ring size: #4 bare stranded copper wire.
Lead: #4 bare stranded copper wire, 10 feet.
Note: Our optional 2X Signal Booster offers
up to double the efficiency/range of the
station’s antenna, allowing the transmitter to
run at less wattage or allowing the signal to
have twice the signal intensity at a given
distance. It functions with upper-band
(typ:1610-1700) antennas only and is recommended
for federal government agencies that do not have
a signal intensity limitation; also for any
operator in a challenging environment that
requires maximum signal intensity to cut through
woods, buildings and obstructions. (Local
government licensees must seek a waiver of the
FCC rules to allow a signal intensity above the
standard 2.0 mV/m limitation.)
VP9000TM Vertical Profile
Antenna System - an antenna/groundplane
system with all electronics inside the pole
and a smaller groundplane requirement -
optional for the ALERT AM, Information
Station, RadioSTAT and ITS6000 HAR
Information Radio Systems.
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.