MRK920 is a modular UHF multichannel receiver system for wireless microphones. It uses a 32 MHz switching window (40 MHz on request) within a 152 MHz tuning range. Standard configurations cover Low Band (470–622 MHz), Medium Band (598–750 MHz), High Band (726–878 MHz); an Entry Level EL version fixes a 32 MHz band (470–878 MHz). The system uses plug‑in RF/input modules and offers PTT intercom and Ethernet remote control via Wisycom Manager.