Radio spectrum (HF band): What frequency range defines the High Frequency (HF) band? Provide the ITU/RF engineering standard limits. Choose the correct range.
Interview
Technology
Difficulty: Easy
Choose an option
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A300 kHz to 3 MHz
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B3 MHz to 30 MHz
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C30 MHz to 300 MHz
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D300 MHz to 3 GHz
Answer
Correct Answer: 3 MHz to 30 MHz
Explanation
ConceptThe ITU designates HF as 3–30 MHz, supporting skywave propagation and long-distance communication.
Final Answer3 MHz to 30 MHz