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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
Components
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.

Groundplane
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.
Specifications
Antenna/Tower
  • 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).
Groundplane
  • 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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