Monday, November 28, 2011

The proposal aimed at these blind cell phone jammer area

Such “high-power blockers + directional antenna” approach before generally applied in goal for building a set of directional antenna auxiliary construction, such as, floor from right away before the limits (it is 20 to 50 meters) all have other building the side walls or roof can borrow to construct directional antenna. If no such right aerial, it should be the other buildings in the corresponding place USES vertical stroke to stem the way (as in the flagpole to erect antenna.
Use “high-power blockers + directional antenna” method, close to meet cell phone jammer a peripheral base station or aerial distance is not very ideal circumstances, may cause the top location or target building on both sides of the building with a few blind alleys, the proposal aimed at these blind area using small power blockers for points, namely: through the large and small power blockers do method of combining. Usually large and small power blockers in estimated quantity, can according to 1:2 or 1:3 proportion to estimate (1 powerful machine estimated 2 or 3 sets to replenish the blind area small power machine).

    
2.2.2.2 high-power blockers + omnidirectional antenna
If need to target buildings do, and overall shielding surrounding relatively open goal building, may overlook to target building surrounding influence, permitting conditions, can take cell phone jammer an examination with less number of trust in the high-power blockers + omni-directional antenna with to target the building to do signal shielding. The diagram below:

Such “high-power blockers + omni-directional antenna with” installation method, the several floors in target building no more than three layers of circumstances, can directly to the antenna mounted on all sides between the pentagon in position, and if the building roof above three layer, layer number is recommended cell phone jammer to the antenna mounted on all sides wall outside of altitude generally take the whole building, central high above a little bit wide offsets.


Use “high-power blockers + directional antenna” method, close to meet a peripheral base station or aerial height (position) is not very ideal circumstances, it can cause a large target floor of high-level position on either side of the building or leave a few blind alleys, the proposal aimed at these blind cell phone jammer area using small power blockers for points, namely: through the large and small power the method of combining blockers. Usually large and small power blockers in estimated quantity, can according to 1:2 or 1:3 proportion to estimate (1 powerful machine estimated 2 or 3 sets to replenish the blind area small power machine).
“High-power blockers + directional antenna” installation method is suitable for both need to target building indoor whole shielding, and need for building a certain peripheral range of open field into line shielding occasion.


In the building of 2.3 overall shielding
Many building in front and back into a list of cases, and no more than 50 metres before and after the interval when (depending on the peripheral base station of distance), between building and building a “power through to the antenna blockers + all the methods to achieve” complementary screen effect cell phone jammer , so can make full use of various blockers effectively screen radius, also the best possible saving blockers spotting quantity, concrete shielding effect schematic diagram shown below:

The building into a column of high-power blockers quantity needed is generally N + 1 (N for building number) building. While still need to consider a number of small power machine for blind spots.

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