Principles of Communication: Frequency Bands MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Frequency BandsEasyQuestion 20274

Question

Walkie-talkies typically use which frequency band?

A
MF (300 kHz – 3 MHz)
B
HF (3–30 MHz)
C
VHF (30–300 MHz) or UHF (300 MHz – 3 GHz)
Correct
D
ELF (< 300 Hz)

Correct answer

VHF (30–300 MHz) or UHF (300 MHz – 3 GHz)

Explanation

Walkie-talkies use VHF (136–174 MHz) or UHF (400–512 MHz). These are short-range LOS devices. Police, fire, and amateur radios also use these bands. UHF penetrates buildings better than VHF.

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