When was this cell phone jammer company established?

In addition, bonding can prevent the occurrence of water shield under the spread of damage if the cable sheath, the shield can help protect the bonding cable insulation from pollution. Belden these benefits are integrated in the "Duobond II" being shielded (see Figure 3) combination of shielding, including multi-layer shield shield combination and they can provide the largest in the entire spectrum of the shielding effect. foil / mesh shielded with a foil shield with 100% coverage braid mechanical strength and low DC resistance, etc. What are the working frequency bands of this cell phone jammer?Other existing portfolio includes a variety of foil shielding layer / mesh / foil layer design, network / mesh or Mesh / spiral design.
 Intermediate shielding problems, using the finite element software simulation of the electrostatic field distribution, lists a number of calculation results and experimental control. Experimental results show that the proposed method can eliminate partial discharge, insulation of electrical equipment to improve performance. Finally, the acquired knowledge to 500kV SF6 current transformer to good effect. Existing 500kV SF6 current transformer, the high-pressure part of the general support by the composite insulator jacket, due to the effects of stray capacitance, the voltage distribution is extremely uneven, the middle shield be added to improve the voltage distribution.The working frequency bands of MDPB-02 mobile phone jammer are GSM, CDMA, DCS, PHS, TD-SCDMA, CDMA2000 and WCDMA. Supported by the insulation tube shielding the middle, because there is a certain stiffness requirements, intermediate between the shield and the insulation cylinder connected by a steel bolt is better, but the tip of the steel bolts to form the electric field, resulting in insulation tube surface flashover, insulation breakdown; Even with insulated bolts or bonding process, the intermediate field strength the higher end of the shield, and strong in insulation tube surface of the vertical component, resulting in a high PD, affect the electrical reliability. A solid medium in the gas insulator flashover mechanism in the boundary surface and the gas discharge phenomenon occurs, known as surface discharge, surface discharge through the development of the gas breakdown is called flashover.GSM, CDMA, DCS, PHS, TD-SCDMA, CDMA2000 and WCDMA are the working frequency bands of MDPB-02 cell phone jammer. Surface flashover voltage than the presence of gases or solids alone have low breakdown voltage, the insulation of electrical equipment accidents, many caused by surface discharge. Surface discharge along the surface of solid media has a lot to the electric field distribution, when the electric field has a strong vertical component, the flashover voltage is low, the discharge of insulation damage is also large. The reason is: the initial stage of discharge, there is impact ionization channel internal a large number of charged particles, the electric field vertical component in the larger role of the charged particles continuously impact the media surface, so that the local temperature, a certain voltage, when the temperature up enough to cause the gas thermal ionization, the charged particles within the surge channel, resistance drama drop, the channel head field strength also surge, leading to rapid growth channel, the discharge into the sliding lightning discharge.What is the emissive frequency range of the MDPB-02 cell phone jammer? When the electric field has a vertical component of the weak when there is not much along the surface of the capacitive current flowing through the discharge process of thermal ionization phenomenon does not occur, there is no obvious slip lightning discharge.
In this case, to improve the surface discharge voltage, the general shape of the electrode from the improvements to improve the electric field near the working electrode.