Question

If you live in a region that has a particular TV station, you can sometimes pick up some of its audio portion on your FM radio receiver. Explain how this is possible. Does it imply that TV audio is broadcast as FM?

a) The audio is transmitted using FM waves.

b) TV audio is broadcast as AM waves.

c) This is due to interference, not the broadcast method.

d) The audio is transmitted using both AM and FM waves.

Answer 1

TV audio is broadcast as FM waves, while the video signal is broadcast as AM. The audio is encoded onto an FM carrier wave and then broadcast.

Step-by-step explanation:

The reason you can sometimes pick up the audio portion of a TV station on your FM radio receiver is because the TV audio is broadcast as FM waves. In TV broadcasting, the video signal is transmitted as amplitude modulation (AM), while the audio is transmitted as frequency modulation (FM). This means that the audio signal is encoded onto an FM carrier wave and then broadcast.