The Pyle Premier Series Microphone Systems feature UHF (Ultra-High Frequency) radios. These systems can be found the world-over and finds uses in personal, commercial, industrial and even military applications. UHF microphone systems are the preferred choice when it comes to safely and effectively transmitting audio signals. They work by generating radio waves and forwarding the signal by way of the microphone and receiver unit. With a larger range than VHF systems, you’ll have an easier time getting your message across.