AKG WMS420 VOCAL Uhf Wireless Vocal SetThe AKG WMS420 UHF Wireless Vocal Set is designed for live sound reinforcement applications such as for public address, presentations, installations, and music performances that require up to eight simultaneously operating systems over a 30 MHz bandwidth. This system consists of an HT420 Handheld Dynamic Wireless Microphone Transmitter, an SR420 UHF Stationary Wireless Receiver, two detachable RF antennas, an AC adapter for the receiver, a microphone