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The Tri-band GSM900&DCS1800&WCDMA Digital Fiber Optic Repeater (DFOR) is designed to solve problems of weak mobile signal in the place that is far away from the Base Transceiver Station (BTS) and has fiber optic cable network underground.
The system consists of two parts: Main Unit and Remote Unit. The Main unit captures the BTS signal via direct coupler closed to BTS, then converts it into optic signal and transmits the amplified signal to the Remote Unit via fiber optic cable. The Remote unit will reconvert the optic signal into RF signal and provide the signal to the areas where network coverage is inadequate. And the mobile signal is also amplified and retransmitted to the BTS via the opposite direction
Features
Application
Specifications
Features
- Aluminum-alloy casing with IP65 protection has high resistance to dust, water and corroding
- Omni-directional antenna can be adopted to expand more coverage
- Tx/Rx control and alarm messages can be transmitted via one fiber optic cable
- Adopting WDM and A/D module to realize long-distance digital signal transmission
- Stable and improved signal transmission quality
- Noise suppression function and Automatic system delay calibration function
- One Donor Unit can support up to 4 links, each link can more Remote Units to maximize utilization of fiber optic cable
- USB port provides a link to a notebook for local supervision or to the built-in wireless modem to communicate with the NMS (Network Management System) that can remotely supervise repeater¡¯s working status and download operational parameters to the repeater
Application
- To expand signal coverage or fill signal blind area where signal is weak or unavailable.
- Outdoor: Airports, tourism regions, golf courses, tunnels, factories, mining districts, villages, ¡
- Indoor: Hotels, exhibition centers, basements, shopping malls, offices, parking lots, ¡

Technical specifictions
Items |
GSM900&DCS1800 |
WCDMA |
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Working Frequency (Customized) |
Uplink |
880~915 MHz |
1710~1785MHz |
1920~1960 MHz |
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Downlink |
925~960 MHz |
1805~1880MHz |
2110~2150 MHz |
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Maximum Output Power(Customized) |
Main Unit |
0dBm¡À1dBm(RF) -3dBm¡À1dBm (Optical) |
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Remote Unit |
-3dBm¡À2dBm(Optical)43dBm (RF) |
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Operating Bandwidth |
15MHz |
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Working Channel Capacity |
8/16(within 25MHz Band) |
3 |
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Maximum Gain |
50dB¡À2 dB |
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Gain Control Range |
30dB @ 1dB step |
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ALC |
20dB |
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Voltage Standing Wave Ratio |
< 1.5 |
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System Delay |
¡Ü 13.0¦ÌSec |
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Spurious Emission |
Within working band |
Comply with 3GPP TS 25.106 V6.0.0 |
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Out of working band (∆f > 2.5MHz) |
9kHz~1GHz: ¡Ü -36dBm/30kHz |
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1GHz~12.75GHz: ¡Ü -30dBm/30kHz |
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Third-order Inter-Modulation |
¡Ü -45dBc / 30kHz (measured under rated output power) |
Comply with 3GPP TS 25.106 V6.0.0 |
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In-band Ripple |
¡Ü 3dB |
¡Ü 1dB p-p / 3.84 MHz |
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Noise Figure |
¡Ü 5dB |
¡Ü 5dB |
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Adjacent Channel Leakage Ratio (ACLR) |
-- |
(Offset 5MHz) ¡Ý 45dBc |
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(Offset 10MHz) ¡Ý 50dBc |
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(Offset 5MHz) ¡Ý 45dBc |
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(Offset 10MHz) ¡Ý 50dBc |
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Peak Code Domain Error (PCDE) |
¡Ü -35dB |
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Error Vector Magnitude (EVM) |
-- |
¡Ü 12.5% |
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I/O Impedance |
50¦¸ |
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Fiber Connector |
SC/FC-PC |
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RF Connector |
N-Type (Female), one port for each system |
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Temperature Range |
Operation:-40¡ãC~ + 70¡ãC |
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Relative Humidity Range |
¡Ü 95% (non condensing) |
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Weight |
Main Unit:11kg/ Remote Unit: 50Kg |
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Consume power |
Main Unit ¡Ü 80W / Remote Unit ¡Ü 500W |
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Power Supply (customized) |
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Dimensions |
Donor Unit: 418mm*290mm * 90mm; Remote Unit: 500mm* 440mm*235mm |
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NMS Monitoring Function |
Real-time alarm for door status, temperature, power supply, etc. |