What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

• A. 112
• B. 96
• C. 60
• D. 124

Answer: (A)

To determine the approximate length of a half-wavelength dipole antenna for the 6 meter band, we can use the formula for the length in feet of a half-wave dipole, which is given by: \[ \text{Length (in feet)} = \frac{468}{\text{Frequency in MHz}} \] For the 6 meter band, the frequency ranges from approximately 50 MHz to 54 MHz. Taking the center frequency for calculations, which is around 52 MHz, we can calculate the length: \[ \text{Length} = \frac{468}{52} \approx 9 \text{ feet} \] Since there are 12 inches in a foot, we further convert feet to inches: \[ 9 \text{ feet} \times 12 \text{ inches/foot} = 108 \text{ inches} \] A half-wavelength dipole antenna for 6 meters is traditionally designed to be around 112 inches, which accounts for additional factors such as the velocity factor of the antenna material. This adjustment results in the approximate length being around 112 inches. Therefore, A is the correct answer because it reflects the standard practical length that operators often use when constructing a dipole antenna

To determine the approximate length of a half-wavelength dipole antenna for the 6 meter band, we can use the formula for the length in feet of a half-wave dipole, which is given by:

[ \text{Length (in feet)} = \frac{468}{\text{Frequency in MHz}} ]

For the 6 meter band, the frequency ranges from approximately 50 MHz to 54 MHz. Taking the center frequency for calculations, which is around 52 MHz, we can calculate the length:

[ \text{Length} = \frac{468}{52} \approx 9 \text{ feet} ]

Since there are 12 inches in a foot, we further convert feet to inches:

[ 9 \text{ feet} \times 12 \text{ inches/foot} = 108 \text{ inches} ]

A half-wavelength dipole antenna for 6 meters is traditionally designed to be around 112 inches, which accounts for additional factors such as the velocity factor of the antenna material. This adjustment results in the approximate length being around 112 inches. Therefore, A is the correct answer because it reflects the standard practical length that operators often use when constructing a dipole antenna