FM Antenna system- 4 Dipoles, 2KW

FM Antenna system- 4 Dipoles, 2KW

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Electrical Features:

  • Frequency Range: 87.5 – 108 MHz (standard FM band).

  • Polarization: Vertical (or optionally circular with phase harness).

  • Input Power Rating: 2,000 watts (2kW) continuous.

  • Nominal Impedance: 50 ohms.

  • VSWR: ≤ 1.3:1 across the entire band (properly tuned).

  • Gain: Approx. 6–9 dBd (depending on mounting and spacing).

  • Radiation Pattern: Omnidirectional (with symmetrical installation), or directional with customized layout.

  • Connector Type: 7/8″ EIA flange or N-type (depending on system design and power level).

Mechanical Features:

  • Material: Anodized aluminum elements with stainless steel hardware for corrosion resistance.

  • Mounting: Comes with mast clamps and U-bolts for easy tower mounting.

  • Dipole Arrangement: Stacked vertically, typically spaced at ½ wavelength intervals for optimal performance.

  • Wind Load: Designed to withstand high wind speeds (often > 200 km/h depending on model).

  • Weight: Varies, but typically 15–30 kg total depending on structure and mount hardware.

Environmental & Operational:

  • Operating Temperature: -40°C to +60°C.

  • Weatherproofing: Fully enclosed feed points, weather-sealed with RF gaskets.

  • Lightning Protection: Typically includes grounding provisions.

  • Optional Features: De-icing kits (for cold climates), directional pattern customization, phasing harnesses for circular polarization.

A 4-dipole FM antenna system is designed for medium- to high-power FM broadcasting applications. With 4 vertically polarized dipoles, the system provides enhanced gain, broader coverage, and directional control. Rated for up to 2kW input power, it’s ideal for community radio stations, regional FM stations, or network repeaters.

Each dipole is a radiating element made of high-grade aluminium, arranged vertically along a mast with precise spacing to achieve the desired pattern and impedance matching.

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