Antennas, Towers & Propagation
Antenna Boresight Ground Geometry
Estimate where a downward antenna boresight intersects a flat reference ground plane, plus its height at a selected site range.
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Use these calculators to screen antenna aperture, far-field distance, quarter-wave length, downtilt geometry, radio horizon, site distance, wind force, and overturning moment.
Antennas, Towers & Propagation
Antenna Effective Aperture
Calculate the receiving effective area implied by antenna gain at a selected frequency, in square meters and square feet.
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Antenna Far-Field Distance
Estimate the common Fraunhofer far-field screening distance from maximum antenna dimension and frequency.
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Antenna Wind Force Screening
Compute force on antenna projected area from user-supplied design pressure and drag coefficient.
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Antenna Wind Overturning Moment Screening
Compute the moment contribution of an antenna force at its specified height; does not assess tower capacity.
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First Fresnel Zone Radius
Calculate the maximum first-zone radius at a specified point along a radio path.
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Quarter-Wave Antenna Length
Estimate a quarter-wavelength radiator length with an explicit user-supplied velocity factor.
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Radio Horizon Distance
Estimate geometric radio horizon distance from two antenna heights using an explicit effective-Earth factor.
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Rooftop Telecom Equipment Area Load
Calculate average equipment load over an explicitly defined support footprint.
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Wireless Site Distance
Calculate great-circle distance between two site coordinates for preliminary path planning.
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