CCI’s Twin TMA contains two TMA’s in a single housing. Each TMA is full band and fully duplexed. High linearity improves the uplink sensitivity and the receive performance of base stations.
The TMA supports CDMA, EDGE/GSM and UMTS BTS equipment. It provides a convenient package for sites upgraded to dual or quad antenna configurations. It provides a convenient package for sites using dual polarization antennas. The twin TMA package reduces tower loading, leasing, and installation costs. Unit count on the tower is cut in half. An excellent match for two branch receive diversity applications using dual polarization antennas. The input and output connectors are located inline for ease of installation in space constrained areas such as uni-pole structures and stealth antennas.

The TMA system consists of a twin outdoor tower mount unit with two antenna inputs. TMA Gain is to be Customer Specified at time of order over a range from 8 dB to 16 dB. The tower mount unit is dual duplexed to separate the low-power uplink signal from the high-power downlink signal at the antenna port, amplifies the low-level uplink signal using an ultra-low noise amplifier (LNA), and recombines the two paths at the BTS port. The tower mount units consist of six band-pass filters, four redundant low-noise amplifiers, bypass failure circuitry, and bias tee’s which are all housed in an IP65 moisture proof enclosure, with IP68 Immersion proof connectors suited to long-life masthead mounting. The unit provides protection against lightning strikes via a multi-stage surge protection circuit. DC power is provided via the feeder cable from the BTS.
An optional indoor power supply unit (PDU) is available to power up to six tower mount units and to provide all the monitoring and alarm functions for the system.  The PDU is housed in a single (1U) 1.75” x 19” rack and contains dual redundant power supplies capable of being “hot swapped” that provide a regulated DC supply voltage on the RF coax for the tower mount amplifiers.