This can mean that the user could have excellent operator 2 signal but weak operator 1 signal. The Service Providers/Network Operators use band selective transmitters and receivers (BTS) to control their own customer's billing and added services. This means only that operator's dedicated channels in the frequency spectrum will be enhanced and not their oppositions. This also assists them in identifying who is responsible when a problem arises.
Because each of these technologies is being run on a specific frequency bandwidth, a jammer for that bandwidth or combination jammer engineered for two or more bandwidths is needed to enhance each format. GSM900 on the 900MHz frequency, DCS on the 1800MHz and UMTS on the 2.1GHz frequency. South Africa operates a Tri-Band network in its major suburban areas where all three services are available. In rural and minor suburb arias a dualband or a singleband GSM900 & GPRS network should be available. The UMTS cell extender cannot amplify 3G if the local BTS is not a UMTS carrier even if the end user's mobile is 3G enabled. He will have to be satisfied with GPRS or Edge.
Why is all signal not available in all arias? No network available. A network is rolled out according to a network plan. Services for arias are planned for and provided according to the potential market. The network operator is a business with shareholders all demanding the best dividends on their investments. A BTS to provide these services to the end user will not be erected for one or two farmers with the potential to generate R6000pm calls/sms's made by themselves and their workers. Where there is substantial inhabitancy of an aria a market for network services is created and accordingly coverage will be provided.
No coverage even though network is available due to distance. Approximate distance a frequency travels when generated at prescribed power level.What is not commonly understood is that different frequencies have different wave lengths and are transmitted at different power levels as determined by the governing broadcasting body. The power level is determined due to the danger of Radio Frequency Radiation (RF) hazards. 1800MHz is already a low microwave frequency and 2.1 GHz is close to the 2.4GHz frequency most microwaves ovens operate on. Should this frequency be amplified indiscriminately, a real health hazard will be inevitable. Should you fall outside this radius you will experience weak signal.
Wednesday, February 27, 2013
Tuesday, February 26, 2013
The workshop can manufacture mobile phone jammer
The good or bad technology which is used to produce signal jammer
Measurement of non-contact. This feature to solve the area of risk measurement, measurement of flexible goals, the need to protect objects (such as heritage), staff can not reach the location of the measurement. (3) penetrating the laser can penetrate less dense vegetation to reach the target surface, or laser scanning technology in an instant, a large number of sampling points, these sampling points can describe the geometric information of the target surface at different levels. (4) initiative and take the initiative to launch the measurement signal does not require external light source, the reflection of light emitted by the probe itself to get the target information. (5) high density, high-precision data acquisition a high degree of digitization, automation, data processing, highly automated, you can easily get the "4D" product. The workshop can manufacture mobile phone jammer with the new design.
Control points can be buried without the prior control measurements, the GPS base station can be simply placed on the measured near the ground known point. A wide range of applications of the laser scanner of 6.2 Laser scanning technology applications, it not only can be used for housing buildings, roads, bridges, dams, measurement, and can be used in the field of industrial measurement, protection of cultural relics, CAD design and animation, virtual reality, as follows: (1) the establishment of 3D city models using laser range scanning to obtain high-resolution The rate of digital surface models (High resolution digital surface the models), and multivariate data integration, can be reconstructed terrain, building three-dimensional models, and DEM generation. 8 (2) to determine the DEM in the forest, measuring tree height, or determination of overhead lines suspended high. It is the complicated commission process of phone jammer .
The laser to penetrate the canopy, the leaves directly reach the ground, so you can obtain the real surface data (3) disaster assessment. Compared the characteristics of earthquakes, landslides, mudslides and other disasters hit the ground and pre-disaster, the changes can be The principle is to generally use the infrared scanning system to using airborne laser scanning system for measurement and analysis to get. (4) measurement of the underwater terrain using airborne laser scanning system measuring shallow water, coastal coastal zone, the depth of lakes and marshes. The green light composite frequency laser pulse to the surface of the water in an arc scanning. green laser penetrate the surface of the water in the bottom reflected back into space; infrared laser, a water immediately reflected back into space. The early type of tactical high energy laser weapon system is installed in six trailers.
Measurement of non-contact. This feature to solve the area of risk measurement, measurement of flexible goals, the need to protect objects (such as heritage), staff can not reach the location of the measurement. (3) penetrating the laser can penetrate less dense vegetation to reach the target surface, or laser scanning technology in an instant, a large number of sampling points, these sampling points can describe the geometric information of the target surface at different levels. (4) initiative and take the initiative to launch the measurement signal does not require external light source, the reflection of light emitted by the probe itself to get the target information. (5) high density, high-precision data acquisition a high degree of digitization, automation, data processing, highly automated, you can easily get the "4D" product. The workshop can manufacture mobile phone jammer with the new design.
Control points can be buried without the prior control measurements, the GPS base station can be simply placed on the measured near the ground known point. A wide range of applications of the laser scanner of 6.2 Laser scanning technology applications, it not only can be used for housing buildings, roads, bridges, dams, measurement, and can be used in the field of industrial measurement, protection of cultural relics, CAD design and animation, virtual reality, as follows: (1) the establishment of 3D city models using laser range scanning to obtain high-resolution The rate of digital surface models (High resolution digital surface the models), and multivariate data integration, can be reconstructed terrain, building three-dimensional models, and DEM generation. 8 (2) to determine the DEM in the forest, measuring tree height, or determination of overhead lines suspended high. It is the complicated commission process of phone jammer .
The laser to penetrate the canopy, the leaves directly reach the ground, so you can obtain the real surface data (3) disaster assessment. Compared the characteristics of earthquakes, landslides, mudslides and other disasters hit the ground and pre-disaster, the changes can be The principle is to generally use the infrared scanning system to using airborne laser scanning system for measurement and analysis to get. (4) measurement of the underwater terrain using airborne laser scanning system measuring shallow water, coastal coastal zone, the depth of lakes and marshes. The green light composite frequency laser pulse to the surface of the water in an arc scanning. green laser penetrate the surface of the water in the bottom reflected back into space; infrared laser, a water immediately reflected back into space. The early type of tactical high energy laser weapon system is installed in six trailers.
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