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Tri Band Repeater for 2g 3G 4G GSM, Dcs 4G Lte 900/1800/2100MHz
Home > Products > Tri Band Signal Booster > 900 1800 2100Mhz Triple Band > Tri Band Repeater for 2g 3G 4G GSM, Dcs 4G Lte 900/1800/2100MHz

Tri Band Repeater for 2g 3G 4G GSM, Dcs 4G Lte 900/1800/2100MHz

    Payment Type: T/T, Western Union, Paypal
    Productivity: 10000PCS/Month
    Place of Origin:  China Guangdong
    Supply Ability: 10000PCS/Month
    Certificate:  RoHS, CE

Basic Info

Model No.:  ST-GDW-27

Product Description

Model NO.: ST-GDW-27 Transmission Medium: Cable Lightning Protection: With Lightning Protection Condition: New Brand Name: St Cellular Networks: 2g/3G/4G Lte Feature: with Alc/AGC/Mgc Function Output Power: 27dBm Warranty: 2 Years Transport Package: Box Origin: China Guangdong Type: Signal Repeater Standard: Standard Certification: RoHS, CE Place of Origin: Guangdong, China Model Number: St-Gdw27 Working Frequency: 900/1800/2100MHz Gain: 75dB Coverage: 1000m2 Trademark: ST Specification: CE HS Code: 85437092 Mobile Signal Booster Tri Band 900/1800/2100MHZ  Signal Repeater GSM  Repeater 
Product Description
What is mobile phone Signal Booster?
Cell phone signal booster is also called repeater, amplifier, which is a products designed to solve the mobile phone blind signal. As the mobile phone signal is transmitted by electromagnetic waves to establish a communications link, the building of the barrier, in some tall buildings inside, the basement of some places such as malls, restaurants, places of entertainment such as karaoke OK sauna and massage, underground civil air defense projects, subway stations and many other places where cell phone signals can not reach and can not use the phone. Cell phone Signal Amplifier can solve these problems in a particular place as long as the installation of a mobile phone signal amplifier system, the entire range of mobile phone signals can be well used, staff or customers will get great convenience.
 Tri Band Repeater for 2g 3G 4G GSM, Dcs 4G Lte 900/1800/2100MHz
Application place
Application places of signal boosters
1. For large buildings such as stores, offices, school, company headquarters, warehouse and so on
2.  For small Houses that in remote place
3.  For vehicle (Car, Truck, RV)
4.  For public place, for example: Metro, Tunnel, Hotel, Pub, Supermarket, etc
5.  Gas Station, Gas Filled Station, Oil Field, Oil Depot

Electrical specification 



Frequency Range


890 ~ 915 MHz

935 ~ 960 MHz


1710 ~ 1785 MHz

1805 ~ 1880 MHz




Max .Gain

≥ 70dB

≥ 75dB

Max .Output Power

≥ 24dBm

≥ 27dBm

MGC ( Step Attenuation )

≥ 31dB / 1dB step

Automatic Level Control                             

≥ 20dB

Gain Flatness


Tpy≤ 6dB(P-P); DCS,PCS ≤ 8dB(P-P)


≤ 2dB/ 3.84MHz,Full Band ≤ 5dB(P-P)

Noise Figure

≤ 5dB


≤ 2.0

Group Delay

≤ 1.5μs

Frequency stability

≤ 0.01ppm

Spurious Emission &
Output inter-modulation

GSM Meet  ETSI TS 151 026 V 6.1.0

WCDMA Meet 3GPP TS 25.143 ( V 6.2.0 )

CDMA Meet  IS95 & CDMA2000

WCDMA System

Spurious Emission Mask

Meet 3GPP TS 25.143 ( V 6.2.0 )

Modulation Accuracy

≤ 12.5%

Peak Code Domain Error

≤ -35dB@Spreading Factor 256

CDMA System


ρ > 0.980


Meet IS95 & CDMA2000

Mechanical  Specifications


I /O Port



50 ohm

Operating Temperature


Environment Conditions





≤ 3.50Kg

Power Supply

Input AC90-264V,output DC 5V / 6A

LED  Alarm


Power LED

Power Indicator


Be lighted when there is phone calling

DL 1

Be lighted when Outdoor signal is -65dB

DL 2

Be lighted when Outdoor signal only -55dB

DL 3

Be lighted when Outdoor signal only -50dB

 Tri Band Repeater for 2g 3G 4G GSM, Dcs 4G Lte 900/1800/2100MHz
ST-GDW-27 Tri Band Repeater Features:
1. With unique appearance design, have good cooling function
2. With MGC function,(Manual Gain Control), Customer can adjust the Gain as needed ;
3. With DL signal LED display, help to install the outdoor antenna at the best state;

4.With AGC and ALC, make repeater work stable .
5.PCB with isolation function ,make UL and DL signal not influence each other,
6.Low intermodulation, high Gain ,stable Output power
Tri Band Repeater for 2g 3G 4G GSM, Dcs 4G Lte 900/1800/2100MHz
 Tri Band Repeater for 2g 3G 4G GSM, Dcs 4G Lte 900/1800/2100MHz
Full kits info
The full set may include (the accessories is up to your choice)
ST repeater main unit
Outdoor antenna
Indoor antenna
Feeder line
Power Splitter (when there are more than 2 indoor antennas)
Connector(N connector, F connector, N to F connector etc)
Tri Band Repeater for 2g 3G 4G GSM, Dcs 4G Lte 900/1800/2100MHz
Installation Steps
1 Use of mobile phones at the top of building or around the building to check out the direction of the strongest signal location.
2 Select the appropriate location, and put the outdoor antenna fix to the wall or bracket.
3 Select the appropriate location of the indoor locations (this location could be best that close to power and a well-ventilated place, sun-proof, rain-proof) Install the Indoor Repeater, and fix on wall or bracket.
4 Put the outdoor antenna to the "OUT DOOR" connector and tightens it. Thus complete the outdoor antenna and Repeater's connection.
5 After setting the suitable location of the indoor antenna and the installation place, then fixing the antenna.
6 The indoor antenna and Repeater wiring, the indoor antenna connect one end of the interface and on the other end connect Repeater's "IN DOOR" port.
Installation sketch

Tri Band Repeater for 2g 3G 4G GSM, Dcs 4G Lte 900/1800/2100MHz
Adjusting illustration
A  Proper adjustment of the antenna's position so that the best communication quality and signal strength.
B  Indoor antenna installed location should stay away from one end of the outdoor antenna, so as not to interfere with each other. (The outdoor antenna away from the indoor antenna placed above a layer of floor is better)
C  Indoor antenna should be installed above the height of 2 m of the ceiling or the corner.
D  Using the waterproof tape to wrap where has connector, so as to avoid oxidation caused by moisture, resulting in reduced indoor signal coverage.

Contact us if you need more details on Signal Booster. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Signal Repeater、Gsm Repeater. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Tri Band Signal Booster > 900 1800 2100Mhz Triple Band

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