The dispatcher adjusted the working time of every shift of Cell Phone Jammers .
Expand the scope of services to eliminate coverage holes, such as mountains, buildings, trees and other objects blocking the signal formed by blind; enhanced field strength in the suburbs, suburban stations to expand coverage; erected along the highway, increase coverage efficiency; solve indoor coverage, such as signal attenuation signal within large buildings, blind, underground mall, subway, tunnel and other signal attenuation dead zone; the free base station signals to the busy base station coverage area to achieve sparse busy; other because the signal can not directly penetrate the shield of the region and so on. A wireless cellular system design, because the base station transmit power is much larger than cell phones, when calculating the distance covered by the base station, often reverse the circuit computing the propagation attenuation. But in the actual installation of the repeater tone measured, for convenience, we still receive phone base station signal strength to be estimated. The dispatcher adjusted the worker number of the day shift of Cell Phone Jammers .
A suburb east of the base station, a main traffic artery, 14km east of our base station to install a repeater service antenna height of about 55m. Repeater service antenna output port connected a 3 to 1 power distributor, respectively, then the plate two 16dBi antennas, small antenna signal westward radiation (point to the base station), a large antenna signal east of radiation. Repeater is not installed, the repeater where the signal is about-100dBm, communications pass off, the effect is very bad. After the opening of the repeater, the repeater about 3-5km west of a signal improved road; repeater extends east of the communication distance and 8-10km. The worker will operate as per the stipulation of working instruction of Cell Phone Jammers .
A village from the base station 5 ~ 6km, because the town better economic conditions, more cell phone users. No repeater, the ground signal -90 ~-95dBm or so, but can not guarantee normal outdoor communications room communications. After the installation of repeaters, the service antenna is about 30m high, the use of omni-directional antenna, the ground station received signal level by about 20dB, can be resolved within a radius of 500-800m indoor coverage (referring to general residential buildings). Located in a scenic valley, from the base station less than 4km, but blocked by mountains, the phone did not work. We are in the mountains at the end of the installation of a repeater, due to the direction of the received signal repeater and transmit the signal direction at a certain angle, the equivalent of radio base stations in the repeater at the turn of a bend. The data in the working instruction of Cell Phone Jammers should be referred to.
Stop relying on the mountain, repeater donor antenna and service antenna were placed on both sides of the mountain, great isolation, the performance of the repeater can give full play, not only solves the communication problems of the user's scenic, also enables communication from the base station to the valley extends 6km.
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