TESLA GSM-01 Signal Booster/Repeater for Improved Cell Phone Reception

The TESLA GSM-01 signal booster/repeater offers a reliable solution for homes, offices, or recreational facilities with weak or unstable cell phone signals. It allows you to stay connected even in areas with poor signal strength. Installation is easy—simply connect the device to an outdoor antenna, which captures the available signal and transmits it for further processing. The signal is then distributed throughout the surrounding area at a quality corresponding to the reception at the outdoor antenna.

The device operates in the GSM 900 MHz frequency band, which is used for standard two-way calls over the mobile network. Voice calls via data services (VoLTE) are not supported.

The signal booster/repeater is designed to work seamlessly with mobile networks available in the Czech Republic*.

Main functions and features:

• Amplifies/repeats the mobile signal in the GSM 900 MHz frequency band
• Enables two-way voice communication
• The resulting signal quality corresponds to the signal level at the outdoor antenna
• Receiving calls via a data connection is not supported
• 900 MHz signal availability may vary depending on coverage and carrier type*
• Coverage up to 500 m²
• Easy wall mounting, compact size, and sleek design
• Broadband signal booster compatible with all Czech carriers
• CE and RoHS certified, energy-efficient operation
• Automatic Gain Control (AGC) protects both the transmission and the BTS network
• Standby mode saves energy when not in use
• Intelligent AI function—adapts performance to current conditions
• Device status and operation indicators

Product Specifications

• Frequency range:
  • GSM uplink: 890–915 MHz
  • GSM downlink: 935–960 MHz
• Gain:
  • Uplink: 65 dB ±3 dB
  • Downlink: 70 dB ±3 dB
• Maximum output power:
  • Uplink: 18 dBm ±3 dBm
  • Downlink: 18 dBm ±3 dBm
• Transmitted power: 27 dBm
• Isolation: >70 dB
• Impedance: 50 ohms (N connector)
• Insertion loss: -3 dB
• Noise figure: 4 dB
• Response time: 0.5 µs
• Power supply: AC 110/230 V (AC/DC adapter, 5 V DC)
• Power consumption: 12.5 W
• Amplifier dimensions: 140 x 100 x 20 mm
• Amplifier weight: 0.2 kg
• Package weight: 1.639 kg
• Installation type: wall-mounted
• Protection rating: IP40
• Operating humidity: <90%
• Operating temperature: -10 °C to +55 °C

Package includes

• Main unit - TESLA GSM-01 repeater
• outdoor receiving antenna
• indoor sector antenna
• coaxial cable from the antenna to the amplifier
• 1x bracket for mounting on a mast (50 mm diameter)
• Installation manual

Note: GSM/LTE signal repeaters may only be operated in the Czech Republic in accordance with General Authorization No. VO-R/24/08.2023-6 issued by the Czech Telecommunications Office. The device may only be operated in compliance with applicable laws and technical requirements and without causing interference to mobile networks.

* You can check the approximate availability of a 2G signal for amplification in your area on the maps provided by individual carriers (Vodafone, T-Mobile, O2). Also verify that your carrier operates on the 900 MHz frequency in that area.