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Calculator - Dipole & Inverted 'V'

The Half-Wave Dipole & Inverted 'V'

The very-popular centre-fed, half-wave dipole and inverted 'V' antennas can be calculated below.

The basic formula for the half-wave dipole is 468/freq (in MHz), but it can be modified below to your needs.

When the dipole will be installed in an inverted 'V' configuration (rather than straight-horizontal) the formula should be modified to reduce the length . A percentage adjustment can be entered below according to the following guidelines:

apex angle No apex angle (straight-horizontal)
90° apex angle
105° apex angle
120° apex angle
135° apex angle

divided by Freq. MHz

percent smaller for an inverted 'V'

Straight Dipole

Total Length:    or  or 
Each Leg:    or  or 

Inverted 'V'

Total Length:    or  or 
Each Leg:    or  or