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The radio spectrum is the radio frequency (RF) portion of the electromagnetic spectrum. In the United States, regulatory responsibility for the radio spectrum is divided between the Federal Communications Commission (FCC) and the National Telecommunications and Information Administration (NTIA).What is AM radio station?
AM Radio. When information is broadcast from an AM radio station, the electrical image of the sound (taken from a microphone or other program source) is used to modulate the amplitude of the carrier wave transmitted from the broadcast antenna of the radio station. This is in contrast to FM radio where the signal is used to modulate the frequency...What is a portable radio?
A portable radio is any device that is designed to receive, decode and sometimes transmit radio signals, which also happens to be portable and easy for one person to transport from one place to another. There are many different types of portable radios that each have different features and functions.