Type RRU Place of Origin China Brand Name huawei Use base station Application Wireless Condition Used/new Support network 2G/3G/4G DBS3900, Distributed Base Station, is the fourth generation base station developed by Huawei. It features a multi-mode modular design and supports three working modes: GSM mode GO, GSM+UMTS dual mode GU, and UMTS mode UO through configuration of different hardware and software. In addition, the DBS3900 supports smooth evolution to the Long Term Evolution LTE system. HUAWEI RRU3668 is equipped with two transmit and two receive ports 2T2R, allowing for simultaneous transmission and reception of signals. It provides a total output power of 2*40W, which contributes to the coverage and capacity of the network. The RRU3668 is a compact and powerful RRU designed for wireless communication networks. It is specifically designed for LTE Long-Term Evolution technology and operates in the 450 MHz frequency band. LTE is a 4G fourth-generation wireless technology that offers high-speed data connectivity.