The VHF (Very High Frequency) range is 30 MHz to 300 MHz. Use this calculator to find the dimensions of a Dipole antenna designed to operate at this frequency range.

A half-wave dipole antenna is comprised of two quarter-wavelength conductors placed end to end [1].

This calculator gives the **length of a half wave dipole antenna**. Enter the Frequency and the tool will compute the antenna length (**L**).

**Example Calculation**

At a frequency of operation 200 MHz. The dipole length (**L**) is **28.1 inches** or **0.71 meters**.

**Formula**

The total length (**L**) of the dipole antenna is calculated as:

**L = 468 / f **

where** f** is the frequency in MHz.

f is calculated from the wavelength.

The length of each arm of the dipole

**l = L/2**