Fiber Link-404(Microwave Transmission)

光纖直放站（FOR）旨在解決遠離基站收發台（BTS）且地下有光纜網絡的地方移動信號弱的問題。 

該系統由兩部分組成：主單元（MU）和遠程單元（RU）。 MU通過靠近BTS的直接耦合器捕獲BTS信號，然後將其轉換為工作頻率，並通過5.8GHz微波傳輸信號將放大後的信號傳輸到RU。 RU將微波傳輸信號重新轉換為工作頻率，提供給網絡覆蓋不足的地區。並且移動信號也被放大並通過相反的方向重傳到BTS。 

The Fiber Optic Repeater (FOR) is designed to solve problems of weak mobile signal in the place that is far away from the Base Transceiver Station (BTS) and has fiber optic cable network underground. 

The system consists of two parts: Master Unit (MU) and Remote Unit (RU). The MU captures the BTS signal via direct coupler closed to BTS, then converts it into working frequency and transmits the amplified signal to the RU via 5.8GHz Microwave transmission signal. The RU will reconvert the microwave transmission signal into working frequency and provide the signal to the areas where network coverage is inadequate. And the mobile signal is also amplified and retransmitted to the BTS via the opposite direction.