• Sourcing Solutions
  • Services & Membership
  • Help & Community

Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: Cosmunion/OEM
  • Model Number: C05
  • Output Power: >30dbm
  • gain(dB): >75db
  • Frequency(MHz): GSM900/CDMA/DCS
  • VSWR: ≤2.5
  • Group delay(uS): ≤1
  • Noise figure(dB): ≤6
  • Working tempreture(℃): -25℃~+55℃
  • Working voltage: AC110V~220V to DC+5V/2A
  • Size(mm): 270x211x55mm
  • Weight(g): 2330

Packaging & Delivery

Packaging Details netual package or color package or customized pakage
Delivery Time 3- 5 days for sample, 1-2 weeks for mass

                      3w industrial high power mobile signal booster for rural city areas



Product Description

C05 is the newest designed model of Cosmunion.this product serials use the advanced technology of AGC and ALC integration, brand new MCU signlechip not only  facilitate the signal process management  but also avoids the interference of the base stationCB21GX-O has a set of different out-put power products, so customer could choose their own required one. 

with Receiving and sending separation, easy installation and operation, Full-duplex design, low consumption, environmental protection ect charactors makes CB21GX-O the best choice of anyone who wants to have a better signal.

Feedback To Us

Product Overviews



Single frequency System  Specification
1 Mini design, beautiful looking and practical
2 Receiving and sending separation, easy installation and operation
3 Full-duplex design, low consumption, environmental protection
Electrical specification  Uplink  Downlink 
Frequency  Range(MHz)CDMA450452.5~257.5462.5~467.5
IDEN806 ~ 821851 ~ 866
CDMA850824 ~ 849869 ~ 894
GSM900890~ 915935 ~ 960
DCS1710 ~ 17851805 ~ 1880
PCS 1850 ~ 19101930 ~ 1990
WCDMA1920 ~ 19802110 ~ 2170
AWS1710 ~ 1755 2110 ~ 2155
Band flatness(dB)GSM,CDMA850≤±3     
Output Power(dBm)≥10≥10
ALC(dB)31dB @ 1dB step
Group delay(uS)≤1.5
Noise figure(dB)≤6
spurious emission9KHz~150KHz≤-36dBm@1KHz
Working tempreture(℃) -25℃~+55℃
Connector typeSMA        N          TNC
Working voltageAC110V~220V to DC+5V/2A
Packaging & Shipping

      Q The solution for without effect after installed
      A. 1. First make sure outdoor antenna’s side has above -65dbm mobile signal.
 2 Make sure repeater,antenna are right model.
 3. Make sure indoor and outdoor antenna,splitter are connected well.
      QAfter installed,the signal situation is improved ,but can’t make a call.
      A1.  Make sure outdoor antenna towards BTS.
2. Make sure the distance between outdoor antenna and BTS within 5KM.
3. Make sure the distance between outdoor antenna and repeater is in the range of 10m
     to 20m.
4. If it still hasn’t been solved,change a higher power repeater or ask a professional 
     person to check.
      QThe communication quality is bad
      A.1. Adjust the direction  of outdoor antenna.
2. Change the signal direction from outdoor antenna to repeater(by nearest straight 
     line,less corner,do not rotate 90degree)
3. Make sure the cable from outdoor antenna to repeater is using 50ohms coaxial cable.
4. Make sure the distance from indoor to outdoor antenna above 20m, it's better to have
   a wall  or passageway between them,avoid the signal from indoor antenna received by
   outdoor antenna amplified (it will make repeater self-oscillation)
      Q After installed,the signal situation is improved,but with small coverage area.
      A.1. Make sure the signal from outdoor antenna is strong.
2.Make sure the cable from indoor antenna to repeater is less than 10m,connectors are 
    connected well,cable material up to standard,no much splitters.
3. Choose more powerful signal repeater.
     Q The solution for the interference to BTS
      A. 1. The reason is the repeater’s uplink power is too big,or it is too close to BTS.
2.The solution is change the outdoor antenna installation place,deviate from BTS,or 
    choose less powerful repeater.
      QMobile signal is not steady
     A. 1. The reason is the self-osillation of repeater.
2.The solution is make sure the connectors are right for input and output,the shield is well.
3.Make sure the distance between indoor and outdoor antenna is above 10m,it is best 
    there is a wall between them. 
     Q There is a full bar on phone,but can’t make a call
      A.1. This reason is the uplink power is not enough,or the signal from outdoor antenna is too
2. First make sure outdoor antenna’s side have mobile signal,and reach above -65dbm.
3.Make sure the distance between indoor and outdoor antenna is above 10m,it is best 
    there is a wall to separate them.
4.Install the outdoor antenna on a higher place,while direct to BTS.
Coporate Profile

Our Services



Making the world a community

Transaction History of the Supplier

Below is the information about the supplier's transactions conducted via Alibaba.com. If you require further details regarding the transaction data, please contact the supplier directly.

Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

Shipping Destination
Transaction Value
Transaction Date
Email to this supplier
Trade Assurance
China (Mainland)
Transaction Level:
Supplier Assessments:
11 Transactions 1,000+
The supplier’s transactions conducted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $23,000
Learn More