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43dBm GSM900&DCS1800&WCDMA2100 20W triple band cell phone signal Repeaters
  • Introduction
  • Mainfeature
  • Application&scenarios
  • Specification
  • Parts/Warranty

GSM900&DCS1800&WCDMA2100 20W Band Selective Repeaters（KT-G/D/WRP-B25/75/60-P43-B）


Kingtone Repeaters
kingtone repeater system is designed to solve problems of weak mobile 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. And the mobile signal is also amplified and transmitted to the BTS via the opposite direction.

 Repeater
 In telecommunications, a repeater is an electronic device that receives a signal and retransmits it. Repeaters are used to extend transmissions so that the signal can cover longer distances or be received on the other side of an obstruction.
There are several different types of repeaters; a telephone repeater is an amplifier in a telephone line, an optical repeater is an optoelectronic circuit that amplifies the light beam in an optical fiber cable; and a radio repeater is a radio receiver and transmitter that retransmits a radio signal.

Telephone repeater
This is used to increase the range of telephone signals in a telephone line. They are most frequently used in trunklines that carry long distance calls. In an analog telephone line consisting of a pair of wires, it consists of an amplifier circuit made of transistors which use power from a DC current source to increase the power of the alternating current audio signal on the line. Since the telephone is a duplex (bidirectional) communication system, the wire pair carries two audio signals, one going in each direction. So telephone repeaters have to be bilateral, amplifying the signal in both directions without causing feedback, which complicates their design considerably. Telephone repeaters were the first type of repeater and were some of the first applications of amplification. The development of telephone repeaters between 1900 and 1915 made long distance phone service possible. However most telecommunications cables are now fiber optic cables which use optical repeaters (below).

Cellular repeater
This is a radio repeater for boosting cell phone reception in a limited area. The device functions like a small cellular base station, with a directional antenna to receive the signal from the nearest cell tower, an amplifier, and a local antenna to rebroadcast the signal to nearby cell phones. It is often used in downtown office buildings.                                                                                                                                                                                                                                                    
 

Mainfeature

Main Features of kingtone cellular repeater     
◇ High linearity PA; High system gain；
◇ Intelligent ALC technology；
◇ Full duplex and high isolation from uplink to downlink；
◇ Automatic Operation convenient operation；
◇ Integrated technique with reliable performance;
◇ Bandwidth can be configured from 5-25MHz in work band.
◇ Local and remote monitoring (optional) with automatic fault alarm &remote control;
◇ Weatherproof design for all-weather installation;

Application&scenarios

Tripl band repeater 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.
It is mainly applicable to such case:
    The repeater can find an installation place which can receive pure BTS signal at strong enough level as the Rx Level in repeater site should be more than ‐70dBm;

    And can meet the requirement of antenna isolation to avoid self‐oscillation.
 

 
 

Specification

Technical Specifications

Items

Testing Condition

Specification

Uplink

Downlink

Working Frequency(MHz)

Nominal Frequency

890-915 MHz

935 – 960 MHz

1710 - 1785MHz

1805 - 1880MHz

1920 – 1980MHz

2110 – 2170MHz

Gain(dB)

Nominal Output Power-5dB

Max.90±3

Output Power (dBm)

WCDMA modulating signal

37

43

ALC (dBm)

Input Signal add 20dB

△Po≤±1

Noise Figure (dB)

Working in-band（Max. Gain）

≤5

Ripple in-band (dB)

Nominal Output Power -5dB

≤3

Frequency Tolerance (ppm)

Nominal Output Power

≤0.05

Time Delay (us)

Working in-band

≤5

EVM(%)

Working in-band

≤12.5

PCDE (dB)

Working in-band

≤35

Gain Adjustment Step (dB)

Nominal Output Power -5dB

1dB

Gain Adjustment Range(dB)

Nominal Output Power -5dB

≥30

Gain Adjustable Linear(dB)

10dB

Nominal Output Power -5dB

±1.0

20dB

Nominal Output Power -5dB

±1.0

30dB

Nominal Output Power -5dB

±1.5

Inter-modulation Attenuation (dBc)

(GSM/DCS)

Working in-band

≤-45

ACPR(dBc)

±5.0

(WCDMA)

Working in-band

≤-45

±10.0

Working in-band

≤-50

Spurious Emission(dBm)

9kHz-1GHz

BW:30KHz

≤-36

≤-36

1GHz-12.75GHz

BW:30KHz

≤-30

≤-30

VSWR

BS/MS Port

1.5

I/O Port

N-Female

Impedance

50ohm

Operating Temperature

-25°C ~+55°C

Relative Humidity

Max. 95%

MTBF

Min. 100000 hours

Power Supply

DC-48V/AC220V(50Hz)/AC110V(60Hz)( ±15%)

Remote Monitoring Function

Real-time alarm for Door Status, Temperature, Power Supply, VSWR, Output Power

Remote Control Module

RS232 or RJ45 + Wireless Modem + Chargeable Li-ion Battery
Parts/Warranty
12 month warranty for repeater equipment ,
6months for accessories of repeater
■ contat supplier ■ Solution&Application

  • *Model : KT-CRP-B25-P37-B
    *Product Category : 37dbm 5W GSM850Mhz cell phone signal Band Selective Repeater

  • *Model : BF-888S
    *Product Category : Baofeng BF-888S UHF400-470MHz Best selling Ham Radio Handheld Walkie Talkie Wholesale

  • *Model : KT--8090-18
    *Product Category : 824-960MHz GSM CDMA 800MHz 900MHz Directional 18dBi Yagi Antenna

  • *Model :
    *Product Category : Professional VHF duplexer 150mhz Bi-Directional Amplifier VHF BDA band selective repeater

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