ARRL Technician Practice Exam

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Prepare for the ARRL Technician Exam with this interactive quiz. Study with flashcards, multiple choice questions, each providing detailed explanations and hints. Ace your exam with confidence!

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What is another way to specify a radio signal frequency of 1,500,000 hertz?

1.5 kHz
1,500 kHz
150 kHz
1.5 MHz

The correct answer is: 1.5 MHz

A radio signal frequency of 1,500,000 hertz can also be expressed in megahertz (MHz), as this unit is commonly used to represent frequencies in the radio spectrum. One megahertz is equivalent to one million hertz. Therefore, to convert 1,500,000 hertz into megahertz, you divide by 1,000,000, which results in 1.5 MHz. Using other units, 1.5 kHz would be significantly lower (1,500 Hz), and 150 kHz is also much less than 1,500,000 Hz. While 1,500 kHz seems close, it's important to recognize that it is equivalent to 1.5 MHz, and therefore would cause confusion when specifying the frequency clearly. Thus, expressing the frequency as 1.5 MHz accurately reflects its value as a radio signal frequency of 1,500,000 hertz.