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Home » MINI GSM Booster 3G 2100Mhz 300m2 Mobile Broadband Booster

MINI GSM Booster 3G 2100Mhz 300m2 Mobile Broadband Booster

The MINI GSM BOOSTER 3G 2100mhz repeater kit (GSB2103G-1) captures and boosts a weak cell signal through a Hi Gain Mini Panel or Yagi antenna and amplifier. Designed to boost coverage for your home, office or building up to 300 m2 over the 2100 MHz frequency. The MINI GSM Booster 3G 21000Mhz (GSB2103G-1) kit comes complete with everything you need to increase mobile phone signal strength and stop dropped calls. The GSB2103G-1 is simple to install and most effective by placing the external antenna in a loft space or the roof of the property.

All GSM Booster Mobile Phone Signal Boosters Come with technical support and prompt despatch.

Kit Overview

  • GSM 3G 2100 Mhz Networks
  • All UK 3G Mobile Phone Network
  • All Ireland 3G Mobile Phone Networks
  • Coverage up to 300 m2
  • Supports up to 15 simultaneous users
  • Works with all Worldwide 2100MHz Mobile Phone Networks

What’s in the Box

  1. MINI GSM 3G 2100 Mhz GSB2103G-1 Mobile Repeater
  2. High gain external signal antenna
  3. 10 meters of high gain coaxial cable
  4. Indoor high gain antenna
  5. AC/DC main power supply
  6. Installation manual
  7. 30 day money back guarantee
  8. 12 Months Warranty


  • Gain ( dB) Uplink Gp=60, Downlink Gp=65
  • Pass band ripple =5dB
  • Guard band rejection (BW-60dB)=42MHz, (BW-70dB)=45MHz
  • I/O impedance 50O/N connector
  • I/O return loss =-8dB
  • Export power (Po) =10dBm
  • Intermodulation Attenuation: =-40dBc (Po=13dBm)
  • Transmission Delay =0.5µs
  • Ambient temperature -10?~50?
  • Power supply AC110~220V + – 10%
  • Power 12v
  • Power Use < 5 Watts
  • Connector Mode N/K for both in-out antenna socket
  • Size of Mobile Repeater 14cm x 12cm x 3cm

GSM Booster GSB-2103G-1 Mobile Phone Signal Booster Repeater has been designed for the 2100 Mhz 3G Mobile Phone Networks. Boosting mobile phone Calls and 3G UMT HSDPA Mobile Broadband Data services. If you are looking to boost Just calls or do not have a 3G signal to boost please look at the following products (2G Boosters)


Mini Panel Antenna – 12cm x 14cm x 3cm – Small discrete Omni antenna 8db input. Ideal for most properties.
Yagi Antenna 55cm x 14cm x 3cm – Larger directional antenna 8db input. Ideal for rural areas or properties with low input signal

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