Category :
calculators
Date Posted :
March 18, 2025
Dipole Antenna Calculator

Dipole Antenna Calculator

Calculate the total length of a half‑wave dipole antenna using the 468/f rule:
\[ L_{\text{ft}} = \frac{468}{f \,(\text{MHz})} \] and convert it to meters.

* Enter the operating frequency (MHz).

Step 1: Enter Frequency

Example: 14 MHz (for the 20m band)

Derived Formula: \( L_{\text{ft}} = \frac{468}{f \,(\text{MHz})} \) and \( L_{\text{m}} = L_{\text{ft}} \times 0.3048 \)


Practical Example:
For \( f = 14\,\text{MHz} \), the dipole length is approximately \( \frac{468}{14} \approx 33.43\,\text{ft} \) or about \( 10.20\,\text{m} \).