COMMSCOPE's Fusion 700/850/1900/AWS, full-band SISO with MIMO support for AWS main hub system. Consists of -FSN-2-MH-2 and FSN-W4-MH-1. InterReach Fusion for business (F4B) is a carrier-approved, field-proven distributed antenna system (DAS) that delivers coverage and capacity for up to four bands and all wireless service providers. The main hub receives its radio frequency (RF) signal from a base station, a FlexWave Focus system, or a repeater. The main hub converts the RF signal to optical, and the signal is sent to the expansion hub using fiber. The expansion hub then converts the optical signal to electrical, and distributes the signal to the RAUs via CATV (thin Ethernet) cabling. Each RAU sends and receives the signals via passive antennas connected to the RAU to wireless phones and PDAs located within its coverage area.