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source:Industry News release time:2020-10-26 Article author:sznbone Popular:Prison Jamming system
What are the current status and misunderstandings of cell phone signal shielding device in prison?
1、 The status quo of cell phone signal shielding device in prison:
1. The area that should be shielded is not strict, which is costly and inefficient;
2. The area that should not be shielded has serious interference and can not be used normally due to complaints;
3. At present, there is no real successful case in China;
2、 Misunderstanding of cell phone signal shielding device in prison
Myth 1: the greater the power, the better
1. Host frequency output is not accurate, frequency drift, bandwidth is too wide, power waste, interference base station;
2. The shielding efficiency of simple sweep power suppression method is not high, and the radiation is large;
3. The nominal power loses its reference value due to false power standard and exaggerated propaganda;
4. Power is the foundation and technology is the key. Hard power is not as good as finding good methods and skills;
Mistake 2: using directional antenna can avoid interference
1. Besides the directional angle of directional antenna, there is a certain transmitting signal strength, which is much lower than the main lobe;
2. The reflection of buildings will still cause external interference;
3. Host frequency drift seriously affects the base station and produces external interference;
4. TD full time shielding interference must exist.
Error 3: high power equipment radiation, small power radiation
1. Outdoor antenna is used for high power, which has the advantages of long operation distance, large shielding coverage, even shielding signal and extremely low radiation;
2. If the low-power equipment does not use multi antenna to pull long-distance shielding, but centralized layout or five antennas working together, its radiation power will be greater than 10 MW / cm2, and the near-range radiation must be seriously exceeded;
Company Profile
Vecano Electronics Company Limited was established by China Government in 2011, focusing on the development and marketing of Security and telecom products.
HISEA is a registered brand of Vecano Electronics Co.,Ltd. HISEA is the foremost innovator in the field of RF jamming. In countering the ever growing threat of remotely controlled improvised explosive devices (RCIEDs), Vecano has invested heavily in the development of a range of State-of-the-art. Vehicular Jamming system ,Portable/Tactical Jammers,Stationary jammer, Bomb jammers, Rf jammers,Cellphone jammers, Custom/Embassy Jamming Solutions, Portable Jammer system ,Prison Jamming system, Handheld Jammers Solutions and so on, for the protection of troop transportation, Military and Police checkpoints , large Governmental establishments, Bomb Disposal Squads and VIP convoys. Also, HISEA produce mobile signal booster/mobile amplifier/mobile repeater. Products widely used in blind zones of offices, family rooms, factories, bars, supermarkets, underground parking garage, etc, where the signal is very poor, or in spite of full mobile signals on the mobile phone, there is a break in voice leading to call clarity problem.
We have strong and excellent R&D group who dedicated to the research and development of our new products. They have used to work in leading companies in telecom industries, such as Huawei Technologies Co.,Ltd. We help customers achieve success, thinking highly of people in our company, pursuing excellence, contributing to our country and inheriting merits of innovative, diligent, precise
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