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Single-Band Fiber Optical Repeater
Model: KR-4365F
Introductions:
The Fiber Optical Repeater is designed to solve problems of weak mobile signal, which can expand more coverage than RF repeater and reduce investment for the areas where is fiber optic cable underground.
The system consists of two parts: Donor Unit and Remote Unit. The Donor Unit receives the BTS (Base Transceiver Station) signal via open air RF transmission or direct coupler closed to BTS, then converts it into optical signal, and transmits the amplified signal to the Remote Unit via fiber optical cable. The Remote Unit will reconvert the optical signal to the working frequency 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
Aluminum-alloy casing with IP65 protection has high resistance to dust, water and corroding;
Tx/Rx control and alarm can be transmitted by one fiber optical cable;
Stable and improved signal transmitting quality;
One Donor Unit can support up to 16 Remote Units to maximize utilization of fiber optical cable;
USB or RS-232 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
Applications
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, etc.
Indoor: Hotels, exhibition centers, basements, shopping malls, offices, parking lots, etc.
Specifications
|
Items |
Donor Unit |
Remote Unit |
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Working Frequency (customized) |
Uplink |
GSM890~915MHz/ DCS1710~1785 MHz/ WCDMA1920~1980 MHz |
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Downlink |
GSM935~960MHz/ DCS1805~1880MHz / WCDMA2110~2170 MHz |
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Transmission Distance |
≤ 20km |
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Working Bandwidth |
2~25 MHz (Customized) |
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Max Input Level |
+10dBm |
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Max Output Power |
43dBm |
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Gain |
≥ 65dB |
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Voltage Standing Wave Ratio |
< 1.5 |
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Optical Output Power |
≥ 0dBm(1310nm)/ ≥3dBm(1550nm) |
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GainAdjustmentRange |
31 dB @ step of 1 dB |
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Noise Figure |
< 5dB (only for uplink) |
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In-Band Ripple |
≤ 3dB |
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Spurious Emission |
Within working band |
≤ -15dBm/30KHz |
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Out of working band (∆f > 2.5MHz) |
9kHz~1GHz: ≤ -36dBm/30kHz |
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1GHz~12.75GHz: ≤ -30dBm/30kHz |
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In-Band Inter-Modulation Attenuation |
≤ -40dBc / 30kHz |
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Out-of-Band Suppression |
Per band |
∆f > 2.5MHz: < -40dBc (downlink); ∆f >10MHz: < -60dBc (uplink) |
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Per channel |
∆f > 1.98MHz: < -44dBc (downlink); ∆f >1.98MHz: < -38dBc (uplink) |
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System Delay |
≤ 5μSec |
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I/O Impedance |
50Ω |
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RF Connector |
N-Type (Female) |
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Temperature Range |
Operation: -25°C ~ + 55°C / Storage: -30°C ~ +60°C |
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Relative HumidityRange |
≤ 95% (non condensing) |
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Power Supply (customized) |
DC +24V/ DC –48V / AC 220V±15%, 50Hz / AC 110V |
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Backup Power Supply (optional) |
4 hours |
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Dimensions |
420mm*90mm*290mm |
610mm*445mm*21mm |
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Weight |
6kg |
35kg |
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NMS Monitoring Function |
Real-time alarm for door status, temperature, power supply, etc. |
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Fiber Optic Light Source |
Laser unit(wavelength:1310nm/1550nm) |
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Optical Receiver Sensitivity |
≤-25dBm |
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