On radio it is written AM, FM1, FM2. What is the full form of AM, FM. Also tell me at what number the chicago?

Question

news come, at what numbers are world news and clasical songs. And english songs.
Serious reply only
TOM

Answer 1

AM stands for amplitude modulation, and FM stands for frequency modulation. A radio wave sent out from the transmitter has a set frequency, like 940 khz or 90.3 mhz. AM stations modulate or vary the amplitude or volume of that wave within the frequency range of sound, from about 20 hz to about 8,000 hz. FM stations modulate the frequency or pitch of that wave within a wider range, from about 20 hz to about 20,000 hz, which is the limit of human hearing. To get FM stereo (two channel) sound, a secondary wave is imposed upon the first. Your radio or receiver removes the radio wave, leaving only the audio signal, which is then amplified and sent to the speaker(s).

Answer 2

AM and FM are two forms of the way that the information being broadcast can be encoded into the transmitted radio signal.

Amplitude Modulated (AM) means that the info causes the broadcast signal to be increased or decreased. That was an early technique because the ways to get back the info were very cheap to implement. There is a limit to the fidelity of the received broadcast since there is not much variation in the signal that is possible.

Frequency Modulation (FM) means that the info causes the frequency of the broadcast signal to be increased or decreased. That was a harder signal to decode using the older techniques. Since FM stations have wide bandwidth there is room for a lot of frequency change and the fidelity of the broadcast is better.

Answer 3

AM stands for amplitude modulation. AM radio ranges from 535 to 1705kHz (kilohertz, or thousands of cycles per-second of electromagnetic energy). These are the numbers you see on your AM radio dial.

FM is frequency modulated. The FM radio band goes from 88 to 108 MHz (megahertz, or millions of cycles per second). Again, you can see these numbers on your FM radio dial. FM stations must be 200kHz apart at these frequencies, which means that there's room for 200 FM stations on the FM band.

Answer 4

chicago news could be 720 or 780 AM (WGN and WBBM respectivly) for classics, 97.1 fm "The Drive" is a good one or you could try 93.1 FM WXRT