Shure UHF System model U4S Wireless Microphone System | eBay
Shure UA400 1/4 Wave Antenna for U4S, U4D, UC4, SLX4, and SLX4L Receivers | Guitar Center
Shure U2 SM58 Wireless Microphone Transmitter for U4D/U4S (UA 782-806 MHz) | Reverb
Shure UA600 Front Mount Antenna Kit For U4S, U4D, UC4, And ULX Single Receivers With Two Coaxial Cables And Two Bulkhead Adapters | Full Compass Systems