cell phone jammer company has strong technical support

 The advantages are the following: increase pore cutoff frequency, to improve the shielding effectiveness of a single hole; increase the radiation source relative to the hole distance (compared with the size of the hole), reducing the leakage of holes (hole leak and distance from the radiation source to the hole); if there is a certain thickness of the perforated plate, can increase the cut-off waveguide attenuation. When the shielding effectiveness of the shield less demanding and less demanding on the ventilation rate, you can use perforated metal, perforated metal plate has the advantage of low cost. However, the amount of shielding between the performance and ventilation contradiction. Products from this cell phone jammer firm are deeply loved by customers in general.Metal mesh: the ventilation holes on the installation of a metal mesh, metal mesh and the shield between the lap to be reliable, to prevent the leakage gap. Metal mesh between the warp and weft to be reliable lap, or shielding effectiveness is very low. Cutoff waveguide plate: If the amount of shielding effectiveness and ventilation requirements are higher, you can use the cut-off waveguide ventilation plate. This board consists of many hexagonal close air waveguide structure, as the cut-off waveguide high shielding effectiveness, and each waveguide wall thickness is thin, so that both the ventilation plate ventilation characteristics and electromagnetic shielding. When using the cutoff waveguide plate, also pay attention to the chassis base overlap between the general use of welding or electromagnetic gasket connection.The main functions and technical index of MDPB-02 cell phone jammer used in examination rooms. As of the cutoff waveguide loss of high frequency cut-off frequency fc frequency electromagnetic waves through the waveguide, very low frequency electromagnetic loss! Work in the cutoff region of the waveguide is called cut-off waveguide. D. processing device operation to open holes on the shield on the shield planted cutoff waveguide effective isolation device to isolate the module will operate the processing device operation, there are two methods: one is directly in the panel opening, the same way as with conventional installation of the operating device, the biggest advantage of the direct method of installation is simple, but will lead to a certain degree of electromagnetic leakage, for two reasons, one is opening a larger size, leading to the chassis leakage of high frequency signals generated by the circuit; another reason operating the device from the hole is due to close, and some even out of the hole, carrying on the operation of the device electromagnetic interference leaking from the hole. MDPB-02 mobile phone jammer could effectively shield signals from all kinds of cell phones.Therefore, the method is only suitable for direct installation of shielding effectiveness requirements are very low, or need a smaller pore size of the occasion. Directly to the operating device is mounted on the panel will result in excessive leakage, you can use a lever to operate the device for indirect control. This can not only reduce the size of openings, but also allows the operator from opening the device, reducing the opening of the leak. If you open a small hole or can not meet the shielding requirements, you can install a cut-off in the open waveguide. No matter which method should pay attention to, through the holes or cut-off waveguide rod can not use metal rods. Another method is to set the isolation tank, the equipment and operation of the main circuit devices (external devices) isolate. MDPB-02 cell phone jammer wouldn’t influence the normal work of other electronic equipment.Compartments for installation methods to avoid problems arising directly, but need to increase costs, including the cost of isolation chamber, electromagnetic sealing gasket cost, filter cost. E. through processing through the shield conductor to the shield conductor damage is very serious.