FM repeaters or transmitters operating within the 88-108MHz range are specialized devices designed to broadcast, extend, or amplify FM radio signals within the commercial broadcast band.
Kingtone Repeaters system is designed to solve problems of weak FM Broard cast signal, which is much cheaper than adding a new Base Station (BTS). Main operation of RF Repeaters system is to receive low‐power signal from BTS via radio frequency transmission and then transmit the amplified signal to the areas where network coverage is inadequate.
Main Features
◇ High linearity PA; High system gain；
◇ Intelligent ALC technology；
◇ Automatic Operation convenient operation；
◇ Integrated technique with reliable performance;
◇ Local and remote monitoring (optional) with automatic fault alarm &remote control;
◇ Weatherproof design for all-weather installation;
Technical Specifications
|
Items |
Testing Condition |
Specification |
Meno |
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|
Working Frequency(MHz) |
Nominal Frequency |
88 – 108MHz |
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|
Bandwidth |
Nominal Band |
20MHz |
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Gain(dB) |
Nominal Output Power-5dB |
95±3 |
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Output Power (W) |
FM modulating signal |
20 |
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ALC (dBm) |
Input Signal add 20dB |
△Po≤±1 |
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Noise Figure (dB) |
Working in-band（Max. Gain） |
≤5 |
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|
Ripple in-band (dB) |
Nominal Output Power -5dB |
≤3 |
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|
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Frequency Tolerance (ppm) |
Nominal Output Power |
≤0.05 |
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Time Delay (us) |
Working in-band |
≤5 |
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Gain Adjustment Step (dB) |
Nominal Output Power -5dB |
1dB |
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Gain Adjustment Range(dB) |
Nominal Output Power -5dB |
≥30 |
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Gain Adjustable Linear(dB) |
10dB |
Nominal Output Power -5dB |
±1.0 |
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|
20dB |
Nominal Output Power -5dB |
±1.0 |
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|
30dB |
Nominal Output Power -5dB |
±1.5 |
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Spurious Emission(dBm) |
9kHz-1GHz |
BW:30KHz |
≤-36 |
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1GHz-12.75GHz |
BW:30KHz |
≤-30 |
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VSWR |
BS/MS Port |
1.5 |
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I/O Port |
N-Female |
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Impedance |
50ohm |
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Operating Temperature |
-25°C ~+55°C |
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Relative Humidity |
Max. 95% |
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MTBF |
Min. 100000 hours |
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Power Supply |
DC-48V/AC220V(50Hz)/AC110V(60Hz)( ±15%) |
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Power Dissipation |
<33000W |
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Remote Monitoring Function |
Real-time alarm for Door Status, Temperature, Power Supply, VSWR, Output Power |
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Remote Control Module |
RS232 or RJ45 + Wireless Modem + Chargeable Li-ion Battery |
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Applications
To expand signal coverage of 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, Packing Lots etc.
