Fiber Optic Repeater is cost-effective for coverage extension without the need of implementing more BTS sites. It can be applied to much larger areas including large public building
10G Fiber Converter (3R Repeater) - Baudcom
Tetra 400MHz Fiber Optic Mobile Signal Repeater - China Repeater, Optic Repeater | Made-in-China.com
Fiber Optic Repeaters | Single Mode to Multimode Converters