The FiberHTT H6GBT2R3-LR up to 6.144Gbps optical SFP+ transceiver module for serial optical communication, applications for a radio base station system. The electrical interface is compliant with SFI specifications of SFF-8472. The transceiver consists of 6.144Gbps 1270nm FP optical transmitter and PIN receiver, and transmission distance up to 10km on 9/125µm SM fiber.