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Radio Frequencies and Their Uses

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Questions and Answers

What is the primary use of Extremely Low Frequency (ELF) waves?

Mobile phone communication
Television broadcasting
Wireless heart rate monitoring
Communication with submarines (correct)

Which frequency band is primarily used for FM radio and television broadcasts?

Ultra High Frequency (UHF)
High Frequency (HF)
Low Frequency (LF)
Very High Frequency (VHF) (correct)

Which of the following frequency bands includes communication with amateur radio operators?

Very Low Frequency (VLF)
Medium Frequency (MF) (correct)
Extremely Low Frequency (ELF)
Ultra High Frequency (UHF)

In which frequency band would you find the range of 300 MHz to 3 GHz?

<p>Ultra High Frequency (UHF) (D)</p> Signup and view all the answers

What is a use of Very Low Frequency (VLF) waves?

<p>Navigation and time signals (A)</p> Signup and view all the answers

Flashcards

ELF frequency range

2-3 kHz

VLF frequency use

Navigation, time signals, submarine comm.

MF frequency use

AM broadcasting (Europe/Asia).

VHF frequency use

FM and TV broadcasts; aircraft comm.

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UHF frequency use

Microwave ovens, mobile phones, and TV.