"Why FCC doesn't approve FM radio?what is the reason?"
They do approve FM radio. They don't just let every yahoo BROADCAST willynilly all over the commercial FM radio bands with a license.
Thank about it. If you and a couple of hunderd of your new best friends were all BROADCASTING on the same frequency as your local FM favorite station, what do you think you would here? Chaos, garbage, and not the station that had paid for the exclusive commercial license to use that frequency. And before you even ask, in most of the country there simply are no available FM frequencies that are unused.
They do approve FM radio. They don't just let every yahoo BROADCAST willynilly all over the commercial FM radio bands with a license.
Thank about it. If you and a couple of hunderd of your new best friends were all BROADCASTING on the same frequency as your local FM favorite station, what do you think you would here? Chaos, garbage, and not the station that had paid for the exclusive commercial license to use that frequency. And before you even ask, in most of the country there simply are no available FM frequencies that are unused.