For Cellular A band usage
Communication Components, Inc. Bi-directional Amplifier (BDA) improves the sensitivity of base stations in indoor locations where there is a significant amount of propagation loss in RF distribution systems. The BDA block is available for operation in all Cellular SMR800 and SMR900 operating frequency bands with different maximum gain values. The BDA is ideal for use any structures with limited signal penetration such as office buildings, industrial facilities, tunnels and subways and is suitable for installation in the most demanding indoor and outdoor environments.