The FLO-1601 is a fiber optic transmitter that allows an L-band satellite signal to be sent over a single-mode fiber. The fiber transmission is totally protocol transparent and the FLO-1601 maintains high signal fidelity over the whole transmission. The FLO-1601 accepts a wide range RF level input and provides automatic gain control (AGC), thus ensuring a nominal RF output level regardless of the RF power received at the input.