The FCC (Federal Communication Commission) regulates all the aspects related to AM and FM in the United States. In every country, there is a regulating body which directs and governs all the transmission related organizations. In the US, there are many detailed descriptions of all the rules and regulations which must be obeyed on time. These are the explanations regarding the broadcasting and for broadcasters. It is also mentioned that the signals of the IBOC must be as per the instructions which are given in the rule book of FCC. There are a number of requirements that need to be set including the RF spectrum analyzer and channels, antenna configuration.
It is important to mention here that the AM stations use the directional antennas. They are used to prepare the field strength analyses at the certain locations having the specified sampling point. All this is mentioned in the AM station's license. RF harmonic measurements are one of the important points in the broadcasting either it is FM or AM.
Those who don't know about harmonic, it is a signal or a wave having an integral frequency which is the multiple of particular reference wave or signal. For every broadcast transmitters, the RF harmonic measurements are must component. According to the FCC, the RF harmonic level must be as low as possible. In addition to that, it must be as per the mentioned or prescribed one. The level of the signal is measured by the use of sufficient attenuation and measurement point requires it.
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