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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: Cosmunion/OEM
  • Model Number: GSM980
  • Output Power: >18dBm
  • gain(dB): 60dB
  • Frequency(MHz): GSM900
  • VSWR: ≤2.5
  • Group delay(uS): ≤1.5
  • Noise figure(dB): ≤3
  • Working tempreture(℃): -25℃~+55℃
  • Working voltage: AC110V~220V to DC+5V/2A
  • Size(mm): 190 x 122 x 25mm
  • Weight(g): 525

Packaging & Delivery

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

cheapest GSM 900Mhz mobile phone signal booster amplifier



Product Description

A mobile phone signal repeater provides the ultimate solution in any area where cellular communications can not work well due to leak of signals.  The repeater device features easy installation & operation, build-in indoor antenna and no interference.  It could also improve indoor electromagnetism environments,
protract cellular battery life and reduce radiation of cellphones.  
A mobile phone repeater is ideal for house, home, office use.

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Product Overviews






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 -70 ~ -40 dBm / FA(1.23MHz)




Max Output Power

 23dBm /±3DBM Total power

27dBm / ±3DB M

Total power





Power Supply

AC 110/220V(used AC/DC Adapter5Vdc)

Compact Design

Indoor Use

Item Diemension

140 x 100 x 20 mm



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.
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