Enter the frequency into the calculator to determine the length of a J-Pole Antenna.
J-Pole Antenna Formula
The following formula is used to calculate the length of a J-Pole Antenna.
L = 468 / f
Variables:
- L is the length of the antenna (feet)
- f is the frequency in MHz
To calculate the length of a J-Pole Antenna, divide 468 by the frequency in MHz. The result will be the length of the antenna in feet.
What is a J-Pole Antenna?
A J-Pole antenna is a type of radio antenna that is widely used for its high performance and simple construction. It is named for its unique shape that resembles the letter ‘J’. The antenna consists of a long vertical section, a short horizontal section, and a matching section, which together form an end-fed omnidirectional half-wave antenna. It is commonly used in amateur radio, CB radio, and FM broadcasting due to its ability to provide a strong, clear signal over a wide range of frequencies.
How to Calculate J-Pole Antenna?
The following steps outline how to calculate the length of a J-Pole Antenna using the formula: L = 468 / f
- First, determine the frequency in MHz (f).
- Next, use the formula L = 468 / f to calculate the length of the antenna (L).
- Finally, calculate the length of the J-Pole Antenna.
- After inserting the frequency 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 (f) = 146 MHz
