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The ClearGain TMAs improve signal quality by boosting the uplink signal of a mobile system to increase receiver performance and improve overall coverage. Features: • Provides amplification of the Band • Highly advanced LNA amplifies RX signal for improved receiver performance and increase in coverage • Dual duplex feature reduces the number of feeder cable runs by providing simultaneous operation of TX and RX with low TX loss • Full Band feature provides amplification of the entire band • Advanced filtering maintains the lowest possible noise figure for improved quality of service • Slim, stackable design conserves tower space and reduces tower-related costs • Seamless aluminum sleeve construction protects components from the elements • Modular system is fully compatible with all base stations • Power and alarming for up to six masthead units is provided from a single unit at the base station • +1 -952 -938 -8080 • 1-800 -366 -3891 Spec Sheet ClearGain® Tower-Mounted Amplifiers 8/ 07 • 105187AE ClearGain ® Tower- Mounted Amplifiers Americas Introduction Unacceptable network quality is one of the main reasons for mobile subscriber churn. With industry churn at their current rates, a service provider’s entire customer base could be lost in as few as three years. The cost of acquiring new subscribers to replace the existing customer base can be enormous. Improvements in quality of service can directly impact a service provider’s profitability through the cost savings associated with increased subscriber retention and the additional revenue gained from increased billable minutes of use resulting from improved signal quality. While subscribers are willing to pay a premium for data services, improved quality of service is necessary to provide new data services. Due to the tradeoff between bit rate and bandwidth inherent to data services, improved signal quality is required to achieve the same level of performance at even higher data rates. ADC’s ClearGain Tower-Mounted Amplifiers help provide this improvement in signal quality. TMAs improve signal quality by boosting the uplink (RX) signal of a mobile system immediately after the antenna. This compensates for the loss in signal strength that occurs when the signal is passed through the coaxial feeder cable to the base transceiver station (BTS) at the base of the tower. ClearGain TMAs perform this amplification with the lowest possible noise contribution, resulting in a substantial increase in receiver performance and an improvement in overall coverage. These improvements in quality of service allow mobile subscribers to place more calls, make longer calls, System Overview The ClearGain TMA system is modular, consisting of a Masthead Unit (MHU), a Power Distribution Unit (PDU) and a Bias-T Unit. This system provides full compatibility with all base stations. The ClearGain MHU offers dual duplex operation and incorporates a highly advanced fixed-gain, low- noise amplifier (LNA) and high-performance filters for added reliability. The MHU amplifies each band to maximize signal quality and optimize coverage. The ClearGain MHU features a slim, lightweight design. This allows two ClearGain TMAs to be mounted with one set of brackets thereby, conserving valuable and costly tower space and reducing clutter on the tower. The TMA is protected with a strong, aluminum sleeve construction designed to ensure superior weather protection and resistance to corrosion, resulting in increased reliability. In the ClearGain TMA system, DC power is supplied to the MHU from a ClearGain PDU. The PDU also provides alarming and monitoring of the feeder cable and up to six MHUs from a single unit. The flexible design of the ClearGain PDU allows it to be rack-or wall-mounted on the side of a BTS cabinet. An external Bias-T Unit is used in conjunction with the ClearGain PDU. The Bias-T inserts DC power onto the coaxial cable and extracts alarm and monitoring signals from the coaxial cable. and successfully complete calls in an expanded geographic area, resulting in increased revenue. + - INpUt NO cOM Nc ALARM MhU DIScONNect power Distribution Unit MhU1 MhU2 MhU3 MhU4 MhU5 MhU6 Base Station clearGain™ tMA ANtBtS Bias-t BtS Antenna BtS 2w w w . a d c . c o m • + 1 9 5 2 9 3 8 8 0 8 0 • 1 8 0 0 3 6 6 3 8 9 1 8/ 07 • 105187AE ClearGain ® Tower- Mounted Amplifiers ClearGain® Tower-Mounted Amplifiers Americas DD800 Full Band Typical Specifications ELECTRICAL Nominal Impedance of RF Inputs and Outputs: 50 Ohm Frequency Range: TX: 869-894 MHz RX: 824-849 MHz Passband (RX) Gain: 12 dB Noise Figure: 1.5 dB Dynamic Range Input at 1 dB Gain Compression: 0 dBm IIP3: +13 dBm Max Input Power: +10 dBm 851 MHz Rejection: <30 dB Bypass Insertion Loss: 2.0 dB Isolation in Tx Path: 80 dB Rejection 1850-1998 MHz: 80 dB Insertion Loss of TX Path (TX to Antenna): 0.4 dB Passband Return Loss TX Band: >18 dB RX Band: >18 dB Intermodulation: -120 dBm Maximum Input Power (RMS Power): 500 W Tx Rejection in Rx...