Each type of wireless microphone system uses a specific radio frequency to transmit and receive sounds. This frequency is the operating frequency. The key to using a wireless system is to choose the right operating frequency. You can't choose radio frequencies to combine at random, because the microphones may interfere with each other, and each system may experience noise interference and missing codes. Also, two wireless systems cannot use the same frequency at the same location. It is also not possible to use one receiver to receive two wireless microphones at the same time. The advanced system can provide more frequency options and can more easily combine more receivers and transmitters to provide more channels to the user.
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