### FCC Technician Exam Question Of The Day (T9A08)

Q) What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

A) 19

Electromagnetic waves travel at the speed of light which is 299,792,458 meters per second or for the ease of calculation we can round up to 300,000,000 m/s. Frequency and wavelength are related and can be determined by the formulas:

Frequency = Speed of Light / Wavelength

or

Wavelength = Speed of Light / Frequency

The easiest way to deal with this question is to simply memorize the answer.

A) 19

**NJ2X Notes**:Electromagnetic waves travel at the speed of light which is 299,792,458 meters per second or for the ease of calculation we can round up to 300,000,000 m/s. Frequency and wavelength are related and can be determined by the formulas:

Frequency = Speed of Light / Wavelength

or

Wavelength = Speed of Light / Frequency

The easiest way to deal with this question is to simply memorize the answer.