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Information Radio Stations (TIS/HAR) •  Advisory Signage  •  Specialized Products/Services
High Efficiency Antenna System
The High Efficiency Antenna System produces a signal intensity, which, with FCC allowance, is higher than possible using the standard antenna system (linked below). At 10 watts, the signal intensity may be 2.0 mV/m at 2.25 miles, producing a sign-able range of 8 to 12 miles. (Note:  Special FCC allowance for increased signal intensity is required.)

The High Efficiency Antenna System's 49-foot antenna/tower, antenna tuner and 30-foot groundplane are designed to be ground-mounted in an unobstructed area approximately 100 feet in radius for maximum propagation. A concrete pad supports the antenna, tower and tuner.
Our High Efficiency Antenna System
Antenna Tower
The tower is 21” square at the top and base and 48” high. It is a one-piece, galvanized steel tower with a hinged bottom plate that allows the tower to “tilt-down” to a 90-degree angle during antenna setup and erection. The tower includes a side mount for the antenna tuner. The antenna bolts to the tower through the tower’s top plate.

Antenna Tuner System
Provided in a weatherproof NEMA4 cabinet, the High Efficiency Antenna System tuner features tuning networks for both resistive and reactive components, lightning arrestor and ground bus on an aluminum panel.

A groundplane is the copper wire part of the antenna system buried beneath the antenna support. The PowerPlaneTM Groundplane is placed in a 6” to 12” excavation that extends outward 30’ in all directions and is covered with backfill. The groundplane consists of two central arcs of #4 bare stranded copper wire with 80 radials that extend outward in a circular pattern, provided in two halves for convenience.

Hardware & Accessories

  • Pad mounting bolts.
  • Antenna/Tower assembly hardware.
  • Conductive grease kit for antenna assembly.
  • Length: 44’.
  • Weight: 300 lbs.
  • Base diameter: 13”.
  • Material: filament wound epoxy glass.
  • Finish: epoxy polyamide paint.
  • Wind resistance: 180 MPH.
  • Ice load: 3/4” radial at 100 MPH.
  • Base section conductor: 8 copper braids.
  • Third conductor: 6 copper braids.
  • Assembly: 3 sections, each approximately 15' in length; 1/4", 3/16" and 3/32" hex allen head bolt connections.
  • Position of loading coil: base and second sections.
  • Top loading: 32” diameter sphere.
  • Power rating: 1 KW.
  • Dry withstanding voltage: 25 KV.
  • Temperature: -60 degrees F to 150 degrees F.
  • Base mounting: Eight .678” holes, equally spaced on a 10.75” circle.
  • Includes written documentation of safe RF exposure distance per ANSI/IEEE C95.1-1992 standard by a professional engineer (PE).
  • Quantity: single PowerPlane Groundplane System in 2 equal sections for convenience.
  • Radials in system: 80 minimum.
  • Radial length: 30’ each.
  • Radial size: #12 bare solid copper wire.
  • Bonding method: silver solder brazing with double weather-resistant coating.
  • Bonding arc size: #4 bare stranded copper wire.
  • Leads: #4 bare stranded copper wire, 15’.
Lightning Arrestor System
  • Capacity: 18,000 amps surge.
  • Clamping speed: fewer than 4 nS.
  • Connectors: UHF (2).
  • Ground connection: aluminum flange.
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