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Antenna Design & Performance Calculators
Electrical Conversion Calculators
Propagation & Field Calculators
Frequency & Wavelength Calculators
Antenna Design & Performance Calculators
Electrical Conversion Calculators
Propagation & Field Calculators
- Antenna Field Strength
- dBµV/m to V/m
- Field Strength Units
- Free Space Path Loss
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Frequency & Wavelength Calculators
Line of Sight Calculator
Use this tool to calculate the geometric horizon and an approximate radio horizon under standard refraction from a single antenna height. Terrain, obstacles, Fresnel-zone clearance, and link budget are not included.
Result will appear here
Result will appear here
Formula:
- dl = √(2Rh) ≈ 3.57 × √h
- dr = approximate radio horizon under standard refraction
Where:
- h = height of the antenna
- R = radius of the earth
- dl = total line of sight
- dr = approximate radio horizon under standard refraction
The results are theoretical horizon distances and do not guarantee actual radio coverage.
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Last updated on September 24, 2026
Author: IBL-Editors Team
Technical Review: Andreas Bender - Deputy Managing Director | IBL-Lab GmbH Give feedback on this article
Author: IBL-Editors Team
Technical Review: Andreas Bender - Deputy Managing Director | IBL-Lab GmbH Give feedback on this article
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