ULXD4 Single Digital Wireless Half-Rack Receiver 1U K51 CH38Digital wireless receiver offers a spectrum and RF intelligent option for use in any professional sound reinforcement application. Features include Digital Predictive Switching Diversity, 72 MHz tuning range, and AES 256 encryption for security. Product Features K51 Band: 606 670 MHz Digital Predictive Switching Diversity Up to 72 MHz tuning range (region dependent) Optimized scanning automatically finds, and prioritizes the cleanest frequencies to be