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We demonstrate a system is comprised of a single-hop network structure with ultra-compact sensor nodes densely deployed and operating at non-trivial data rates. The contribution of our research is a light-weight, multi-channel protocol which minimizes the complexities on the sensor nodes while retaining high flexibility and high scalability. The data streams collected by the base stations are transmitted over the Fast Ethernet to the host for real-time data logging. The system keeps gathering data in a network of 100 sensor nodes organized as two frequency groups, and all sensor nodes are deployed within 2 m2 area.