Abstract: The M-2R (Upgraded Version) Dual-Channel Wireless Microphone System utilizes true diversity wireless digital pilot tone to precisely control wireless signals, enhancing interference resistance and signal quality. It features automatic frequency tracking for stable output, improving overall system performance and reliability. With a bandwidth of 42MHz, it offers 1,280 available frequency points, supporting over 16 simultaneous channels with 32 interference-free channels per band. The system provi