Dipole Length Calculator For a Center Fed Dipole the Formula is 468 Divided by Frequency in Megahertz (For a Half Wave Dipole), dont forget to make your Antenna slightly longer to allow it to be trimmed to obtain the best SWR Inverted V Antennas should be Approximately 3-5% shorter than a dipole of the same Frequency, in this Calculator its set at 4% but you can alter this if you want to use another number. The figure 468 can be changed to 234 if you want the measurement for a Quarter wave Antenna Enter the formula for the antenna calculation Divided by Freq MHz Percent smaller for the Inverted Vee Your dipole's total length is feet Each leg of the dipole is feet Your Inverted V's total length is feet Each leg of the Inverted V is feet
