Compact true-diversity IFB receiver for professional monitoring applications. The MPR50-IFB covers 470–700 MHz with up to 2400 switchable channels in 40 groups and supports wideband and narrowband FM. It uses two whip antennas, an OLED display, infrared and USB management, and runs on two AA cells or a rechargeable lithium pack. Multi-compander modes (ENR/ENC/ENS/IFB) ensure compatibility with Wisycom transmitters.