DTMA (Dual Tower Mounted Amplifier) is both main and diversity branch and

fits with cross-polarization antennas. DTMA is installed near the antenna at the

tower top to improve receiver sensitivity of the base station. The usage of DTMA

will result in an increase of successful call attempts, reduction of call drops,

maximized data transmission rate, improved call quality and extended handset

talk time.

FeaturesHigh linearity and low noise performance .

Balanced LNA design and power failure bypass for high reliability .

Light weight and compact design .

Wall mounting and mast mounting .

Built-in lightning protection .

Support AISG 1.1 or 2.0 protocol .

Appearance And Block Diagram

Product Description

DTMA2100 Datasheet Issue:02

Technical Specifications

Item

Frequency rangeBandwidthInsertion lossReturn lossTx-Rx rejectionGroup delay variationInput power

Intermodulation products in Rx band

Frequency rangeBandwidthReturn loss

Insertion loss in by-pass modeGainGain rippleNoise figureOutput 1dB compressionOIP3Group delay variationRx-Tx rejection before LNARx-Tx rejection after LNA

CWA Mode AISG ModeDC supply voltage 9 V15 V 9 V30 VOperating current per TMA(without RET) 110 mA310 mA 50 mA490 mAAlarm management 330 mA710 mA AISGPower consumption

Operating temperature rangeIP ratingMTBFEMCLightning protection

RF connectors

AISG connector

MountingWeightMast diameterDimensions(HWD)

18 dB70 dB

Mechanical

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