This calculator estimates the inner and outer coverage radii of an antenna’s signal area using antenna height, downtilt angle, and vertical beamwidth. It helps in understanding how far the antenna signal extends and where it starts, aiding in coverage optimization.
Formulas
Inner Radius = H / ( tan(A + BW/2) * 5280 )
Outer Radius = H / ( tan(A – BW/2) * 5280 )
Formula Explanation
- H is the antenna height in feet.
- A is the electrical downtilt angle in degrees.
- BW is the vertical beamwidth in degrees.
- Radius is given in miles (can be converted to km or meters).
Example
Input: H = 100 ft, A = 6°, BW = 10°
Result: Inner Radius = 0.017 miles, Outer Radius = 0.027 miles
Who uses it
Helpful for RF engineers and network planners to fine-tune antenna positioning for optimal coverage and minimal interference.