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- General Radiotelephone Operator (Element 3 (GROL)) »
- FCC Element 3 - General Radiotelephone
39. What type of wave is made up of sine waves of the fundamental frequency and all the odd harmonics?
A square wave's Fourier series comprises the fundamental frequency and all odd harmonics, making it the correct answer. Other waveforms, such as sine, cosine, and tangent, represent single frequencies and lack this harmonic structure.
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