https://cablematic.com/en/products/amplifier-repeater-gsm-3g-900mhz-1800mhz-2100mhz-70db-with-antennas-and-cables-GW008/
Amplifier repeater GSM 3G 900MHz 1800MHz 2100MHz 70dB with antennas and cables
- Signal amplifier for GSM and 3G mobile telephony in the 900Mhz, 1800MHz and 2100MHz frequencies.
- Contents: Outdoor logarithmic antenna with 10m of cable, indoor planar antenna with 5 meters of cable, GSM / 3G signal repeater / amplifier and 12 VDC (2A) power supply.
- Repeater mounted in metal casing of size 200 x 150 x 21mm. Repeater with two N-female connectors (indoor / outdoor) and LCD screen that indicates the signal strength of each band.
- Outdoor logarithmic antenna 806-960MHz, 1710-2170MHz and 2300-2700 with 8 / 9dBi gain. It has an N-male connector that connects directly to the repeater. Includes fixing system to wall or tubular post.
- Indoor planar antenna 806-960MHz and 1710-2690MHz with 6 / 8dBi gain. It has an N-male connector that connects directly to the repeater.
- The logarithmic antenna is installed outdoors to capture the GSM / 3G signal wherever there is coverage. The repeater and the omni-directional antenna are installed inside, to increase the quality of the signal and offer good coverage.
- Possibility of acquiring coaxial cable to extend the cable length (# GW03x and adapter # WH083).
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- Signal amplifier for GSM and 3G mobile telephony in the 900Mhz, 1800MHz and 2100MHz frequencies.
- Contents: Outdoor logarithmic antenna with 10m of cable, indoor planar antenna with 5 meters of cable, GSM / 3G signal repeater / amplifier and 12 VDC (2A) power supply.
- Repeater mounted in metal casing of size 200 x 150 x 21mm. Repeater with two N-female connectors (indoor / outdoor) and LCD screen that indicates the signal strength of each band.
- Outdoor logarithmic antenna 806-960MHz, 1710-2170MHz and 2300-2700 with 8 / 9dBi gain. It has an N-male connector that connects directly to the repeater. Includes fixing system to wall or tubular post.
- Indoor planar antenna 806-960MHz and 1710-2690MHz with 6 / 8dBi gain. It has an N-male connector that connects directly to the repeater.
- The logarithmic antenna is installed outdoors to capture the GSM / 3G signal wherever there is coverage. The repeater and the omni-directional antenna are installed inside, to increase the quality of the signal and offer good coverage.
- Possibility of acquiring coaxial cable to extend the cable length (# GW03x and adapter # WH083).
More info
GSM and 3G signal repeater at 900Mhz, 1800MHz and 2100MHz frequencies. The 900/1800 / 2100MHz frequencies are used in GSM / 3G mobile telephony for digital voice transmission and 3G data transmission. Ideal for increasing the quality of the mobile phone signal in environments where the signal fails. The typical installation could be an indoor room where the signal quality is poor, where the GSM repeater is placed, while the receiving antenna is placed outside, which captures a good signal quality.
Specifications
- Signal amplifier for GSM and 3G mobile telephony in the 900Mhz, 1800MHz and 2100MHz frequencies.
- Contents: Outdoor logarithmic antenna with 10m of cable, indoor planar antenna with 5 meters of cable, GSM / 3G signal repeater / amplifier and 12 VDC (2A) power supply.
- Repeater mounted in metal casing of size 200 x 150 x 21mm. Repeater with two N-female connectors (indoor / outdoor) and LCD screen that indicates the signal strength of each band.
- Outdoor logarithmic antenna 806-960MHz, 1710-2170MHz and 2300-2700 with 8 / 9dBi gain. It has an N-male connector that connects directly to the repeater. Includes fixing system to wall or tubular post.
- Indoor planar antenna 806-960MHz and 1710-2690MHz with 6 / 8dBi gain. It has an N-male connector that connects directly to the repeater.
- The logarithmic antenna is installed outdoors to capture the GSM / 3G signal wherever there is coverage. The repeater and the omni-directional antenna are installed inside, to increase the quality of the signal and offer good coverage.
- Possibility of acquiring coaxial cable to extend the cable length (# GW03x and adapter # WH083).
- Maximum output power: 23 dBm (downlink) and 23 dBm (uplink). Maximum gain: 60dB ± 3dB (downlink) and 65dB ± 3dB (uplink). Characteristic impedance: 50 Ohm.
- Operating frequency 900Mhz downlink: 935 - 960 MHz.
- Operating frequency 900Mhz uplink: 890 - 915 MHz.
- Operating frequency 1800Mhz downlink: 1805 - 1880 MHz.
- Operating frequency 1800Mhz uplink: 1710 - 1785 MHz.
- Operating frequency 2100Mhz downlink: 2110 - 2170 MHz.
- Operating frequency 2100Mhz uplink: 1920 - 1980 MHz.
- Gross Weight: 2.887 kg
- Product size (width x depth x height): 33.5 x 23.0 x 23.0 cm
- Number of packages: 1
- Packages size: 33.5 x 23.0 x 23.0 cm
Technical terms
- Impedance
- Hz
- GSM
- dBm
- dBm
- VDC
Impedance (Z) is the total opposition that a circuit offers to alternating current (AC) flow when a specific voltage is applied.
Unlike simple resistance, impedance is a complex quantity comprising resistance (the real part) and reactance (the imaginary part, representing inductive or capacitive effects). In the frequency domain, impedance is represented as a phasor, accounting for both magnitude and phase shift between voltage and current. In DC circuits, impedance reduces to pure resistance with zero phase angle.
| Parameter | Technical Spec |
|---|---|
| Symbol | Z |
| Unit | Ohm (Ω) |
Impedance management is critical in high-speed hardware design and signal integrity. In modern PCB manufacturing, controlled impedance ensures that high-frequency signals reach their destination without reflections, which is vital for PCIe or DDR5 performance.
Complex Domain Analysis
Mathematical modeling of impedance using the j-operator allows engineers to optimize filter performance and resonance characteristics in electronic systems.
Key Advantages
- Maximum power transfer through impedance matching.
- Minimized signal reflections in high-frequency transmission lines.
- Improved electromagnetic compatibility (EMC).
Note: Impedance is the cornerstone of modern AC circuit theory and high-frequency design.


