When one channel cuts out, the other channel takes over, keeping the sound continuous at all times. This type of radio microphone is known as a diversity type. It is considerably more expensive, and as a result, for the few times a good quality single channel microphone may let you down, spending the extra is often not justified. The do's and don'ts. Always make sure that you have sufficient battery life in the microphone to last the event.
Most manufacturers have an early warning system built-in.
It is good practice to keep a few new batteries handy in the event of failure. Standard type batteries will do. When radio microphones were first introduced to the market, they were generally thought of as being an extravagance, far too expensive for the day to day applications which prevailed. Not only theatre and broadcasting companies, but also schools, colleges and increasingly churches are recognising the benefits of modern wire-free communication. We would not advocate that all microphones in a church be of the radio variety, just because of the wire-less aspect.