best wifi range network extender
The mobile phone signal amplifier (professional name: repeater or booster) consists of antennas, RF duplexers, amplifiers/repeater/booster device, mixers, electrical attenuators, filters, power amplifiers and other components or modules to form uplink and downlink amplification links. The basic principle of its work is: use the forward antenna (donor antenna) to receive the downlink signal of the base station into the repeater, amplify the useful signal through the low noise amplifier, suppress the noise signal in the signal, and improve the signal to noise ratio (S/N). After being down-converted to the intermediate frequency signal, filtered by the filter, amplified by the intermediate frequency, then frequency-shifted up to the RF, amplified by the power amplifier, transmitted by the backward antenna (retransmission antenna) to the mobile station; The uplink signal of the mobile station is received, and is processed by the uplink amplification link along the opposite path: that is, after the low noise amplifier, the down converter, the filter, the intermediate amplifier, the up converter, and the power amplifier are transmitted to the base station. Thereby achieving two-way communication between the base station and the mobile station.
The mobile phone signal amplifier is a product specially designed to solve the blind spot of mobile phone signals. Because the mobile phone signal relies on the propagation of electromagnetic waves to establish communication links, due to the blockage of buildings, some shopping malls, restaurants, karaoke sauna massage and other entertainment places, underground civil air defense projects, subway stations, etc. in some tall buildings and basements. In many places, cell phone signals cannot be reached and mobile phones cannot be used. Cell phone signal amplifier can solve these problems well. As long as a mobile phone signal amplifier system is installed in a specific place, the whole range of mobile phone signals can be used well, which brings great convenience to the staff or guests inside.
|Frequency||800/2100MHz Band 20/Band 1|
UL: 832-862 / 1920-1980MHz
DL: 791-821 / 2110-2170MHz
|Power Supply||Input AC100V-240V 50/60Hz 0.6A|
|Output 12V 2.0A|
|Size||232 x 178 x 22 mm|
|Pass Band Ripple||≤3dBi|
|Connector Type||N female connector|
|Reliability||To the GB6993-86 standard|
|Electromagnetic Compatibility||To the ETS300 694-4 standard|
|Function||a) Power supply LED denote|
|b) Export power LED denote|
How to install the signal booster.
1. Selection: According to different areas and building structure, different models are selected.
2, antenna distribution: outdoor directional Yagi antenna or log periodic antenna. also have other type for optional., the direction of the antenna can be directed to the mobile company's transmitting base station, in order to achieve the best reception effect, indoor omnidirectional antenna can be used, the installation height is 2-3 meters (antenna installation The quantity and position are related to the indoor area and the structure of the room.) It is only necessary to install one antenna for an indoor unobstructed range of 300 square meters, two antennas for a range of 300-500 square meters, and three antennas for a range of 500-800 square meters.
3, signal amplifier installation: generally installed above 2 meters above the ground, the location of the equipment installation and the distance between the indoor and outdoor antennas should use the shortest distance of the way of transmission (the longer the line attenuation, the greater the signal attenuation) to achieve the best results.
4, the use of wire: signal booster feeder cable radio (ie cable TV) standard is 75Ω, but cell phone signal amplifier is the communications industry, 50Ω is the standard, and the impedance is wrong will make the system indicators deteriorate. The thickness of the wire is determined according to the actual situation on the site. The longer the wire is, the thicker the wire is to reduce the attenuation of the signal.
The use of 75Ω wire wire to make the host and wire mismatch will increase the standing wave and cause more interference problems. Therefore, the selection of wire should be differentiated according to the industry.
The signal from the indoor antenna during installation cannot be received by the outdoor antenna, and it will generate self-excitation. Generally, the two antennas are separated by 8 meters to avoid self-excitation.
Other repeater and accessories for optional:
If you have any questions for Mobile signal booster. Welcome to contact us!