Enter the antenna height into the calculator to determine the line of sight distance and service range of the antenna.

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## Line of Sight Formula

The following equations can be used to calculate the line of sight and service range distance of an antenna.

LOS = 3.57 * SQRT ( h)

SR = 4.12 * SQRT (h)

- Where LOS is the line of sight distance (km)
- SR is the service range (km)
- h is the antenna height (m)

To calculate the line of sight, multiply the square root of the height by 3.57.

## Line of Sight Definition

A line of sight is defined as the distance on the horizon that an object of some height can “see” with a direct line.

## Line of Sight Example

How to calculate service range and line of sight?

**First, determine the height.**Measure the height of the antenna.

**Next, calculate the line of sight.**Calculate the line of sight using the equation above.

**Finally, calculate the service range.**Calculate the service range using the formula above.

## FAQ

**What is a line of sight?**

A line of sight is the distance to the horizon an object can “see” from its position. The taller the antenna the taller the line of sight.

**What is a service range?**

A service rand is a similar distance to line of sight but takes into account the extra bit of range acquired from bouncing radio waves.