Enter the frequency (MHz) into the Calculator. The calculator will evaluate the Antenna Trap. 

Antenna Trap Formula

L = 31.8 / f


  • L is the Antenna Trap ((inductance))
  • f is the frequency (MHz)

To calculate the Antenna Trap, divide 31.8 by the frequency.

How to Calculate Antenna Trap?

The following steps outline how to calculate the Antenna Trap.

  1. First, determine the frequency (MHz). 
  2. Next, gather the formula from above = L = 31.8 / f.
  3. Finally, calculate the Antenna Trap.
  4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

frequency (MHz) = 500