4G Cell Phone Jammer Repeater belonging to the same frequency amplifying device refers to play a radio signal enhancement in the wireless communication transmission device transmitting transit. Repeater is a basic function of RF signal power booster.
4g cell phone jammer Repeater in the downlink, the current pick-up signal from the coverage area of the donor antenna, a band-pass filter for band-pass signals outside the excellent isolation, after the power amplifier amplifying the filtered signal to be transmitted to the again coverage area. In the uplink path, the mobile stations within the coverage area of the mobile phone in the same operating mode signal from the amplified uplink link processing is transmitted to the respective base stations, so as to transfer the signal to the base station and the mobile phone. 4g cell phone jammer
1.3 handsets, repeater, base station which radiation bigger?
Compare up from power transmission, the base station is generally the largest, followed by a minimum of repeater, cell phone. 4g cell phone jammer
Depends on the specific radiation field (and related to the distance power and the transmission source) and duration.
Figuratively such as mobile phones transmit power small (generally maximum 0.5-1W) but cell phone antenna away from the body very close, so the body received field strength is large, much larger than the base station. (However, the duration is not very long)
The basic construction of the 1.4 base stations 4g cell phone jammer
In different regions under different terrain different floor covering different buildings, the use of a base station Mobile and China Unicom have different circumstances, and different parts of the operators may have their own building habits, such as Henan, you say white steel is galvanized steel tower construction, while the blue steel is steel towers, so you see the situation is normal.
Generally speaking, in rural or remote areas, mobile communications are required to carry an antenna tower construction to cover the surrounding area.
Common Tower standing tower (the four corners of a large base stand directly on the ground), cable tower (tower is very small, surrounded by wire fixed), roof tower (Here is the engine room, the tower standing on the four corners of the room), etc., are also used in the steel tower (like a large billboard of steel production tower) of. In contrast, steel tower more economical place to move the company leased land cost is low, less coordination, but the high cost of construction, erection and maintenance of inconvenience. The self-tower more stable construction easier and less expensive.
Tower as a wide coverage area (the provincial capital generally cover 100km above), so the tower is much higher, generally more than 100m. The mobile communication tower to be covered from now, only a few kilometers to tens of kilometers, it is generally Tower at 25-40m.
In the city, erecting antennas generally use the building roof, the building is not enough just above the height of the construction formwork (3-5m height). There is also the use of towers, walls.
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