What is the transmission frequency range of FM radio?

Question

What is the transmission frequency range of FM radio?

1. A. 28-58 MHz
2. B. 88-108 MHz (Correct answer)
3. C. 58-88 MHz
4. D. 108-128 MHz

Correct Answer

Option B — 88-108 MHz

Detailed Solution & Explanation

The correct answer is 88-108 MHz.

Key Points

• Commercial FM radio broadcasting occupies the band from 88 MHz to 108 MHz.
• This band lies within VHF (Very High Frequency), which spans 30 MHz to 300 MHz.
• The width of the band is 20 MHz, and each FM station is allotted a 200 kHz channel within it.

Additional Information

• AM radio by contrast uses the medium wave band, 535 kHz to 1605 kHz.
• FM's much wider channel allows a 75 kHz frequency deviation, which is what gives FM its superior audio fidelity and noise immunity compared with AM.