Fiber Link-504

900兆赫+1800兆赫+2100兆赫+2600兆赫+3500兆赫

光纖直放站（FOR）是為了解決遠離基站收發站（BTS）且有地下光纜網絡的地方移動信號弱的問題而設計的。

該系統由兩部分組成：主站單元（MU）和遠程單元（RU）。 MU通過施主天線捕獲BTS信號，然後將其轉換為光信號，並通過光纜將放大的信號傳輸到RU。 RU將光信號重新轉換為射頻信號，並將信號提供給網絡覆蓋不足的區域。移動信號也被放大並通過相反的方向重新傳輸到BTS。

900 MHz +1800 MHz + 2100 MHz + 2600 MHz + 3500MHz 

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 donor antenna, then converts it into optic signal and transmits the amplified signal to the RU via fiber optic cable. The RU will reconvert the optic signal into RF signal 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.