Quarter Wave Ground Plane Antenna Calculator
Frequency
MHz
Velocity Factor
vf
Give me the results in…
mm (MilliMetres)
cm (Centimetres)
m (Metres)
in (Inches)
ft (Feet)
A.
Vertical Monopole Radiating Element (λ*0.25)*vf
B.
Radials (λ*0.28)*vf
Actual wavelength