ARRL Technician Practice Exam

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Prepare for the ARRL Technician Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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What is the approximate length, in inches, of a 6 meter 1/2-wavelength wire dipole antenna?

The correct answer is: 112

To determine the approximate length of a 6-meter 1/2-wavelength wire dipole antenna, it's important to understand the formula used for calculating the length of a dipole antenna. The formula is: Length (in feet) = 468 / frequency (in MHz) For a 6-meter band, the frequency range is around 50 MHz. Using this frequency in the formula: Length = 468 / 50 ≈ 9.36 feet. Since there are 12 inches in a foot, we can convert the length to inches: 9.36 feet × 12 inches/foot = 112.32 inches. Thus, the approximate length of a 6-meter 1/2-wavelength dipole antenna is around 112 inches. This length corresponds closely to the choice provided, confirming that it is indeed the correct option.