Why is a multiplexed FM signal broadcasting silence so… spiky?

1. Why is frequency modulation superior to amplitude modulation?
2. What happens in frequency modulation?
3. Why FM is called constant bandwidth system?
4. What is FM signal bandwidth?

Why is frequency modulation superior to amplitude modulation?

In radio transmission, an advantage of frequency modulation is that it has a larger signal-to-noise ratio and therefore rejects radio frequency interference better than an equal power amplitude modulation (AM) signal. For this reason, most music is broadcast over FM radio.

What happens in frequency modulation?

Frequency Modulation (FM) is a form of modulation in which changes in the carrier wave frequency correspond directly to changes in the baseband signal. FM is considered an analog form of modulation because the baseband signal is typically an analog waveform without discrete, digital values.

Why FM is called constant bandwidth system?

FM is called a constant bandwidth system because: ... The amplitude of a frequency modulated signal remains constant. 2. The power in the transmitted signal remains constant.

What is FM signal bandwidth?

The frequency modulation index is mostly over 1 and it usually requires a high bandwidth at a range of 200 kHz. FM operates in a very high-frequency range normally between 88 to 108 Megahertz.