ComFlex ACU Series DAS System

The Comba ComFlex Active Conditioning Unit (ACU) DAS is a modular, multi-technology RF signal conditioner designed to be flexible and deliver reliable wireless service coverage to both indoor and outdoor environments. Engineered to handle large venues such as stadiums, arenas and airports, the ACU can handle multi-carrier, multi-band and multi-sector system architectures. The ACU can be fed RF through a multiple of sources including BTS (Base Station) through Comba's ACU solution, Small Cell as well as a base station's over-the-air RF signal received through a donor antenna mounted on the roof.

The ACU is comprised of a 19" rack mountable chassis, control unit, power supply and slots for up to 8 RF modules. The unit can be expanded to cascade 4 ACU's together for maximum flexibility and independently configured to work with any DAS equipment including Comba's Fiber Optic Unit (FOU) and Remote Units to deliver a state-of-the-art and truly future-proof system that can be upgraded anytime.


Depending on the venue size, required carrier/bands, the ComFlex ACU DAS can be designed to meet the needs of the venues specifics needs. An example of a large multi-sector, MIMO system architecture diagram to the right.



• Low PIM (≤ -160dBc)
• Up to 8 RF modules for each chassis
• Up to 32 sources by 4 ACUs, cascaded
• Duplex input from BTS / Simplex output
• DL input power from 5W-100W
• Each RFU has built-in internal signal source
• Web-based GUI
• Active ATT, input power detection and ALC protection for each RF module


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