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Can the mobile phone still be used after the full-band signal jammer is turned on? | #doll

Can the mobile phone still be used after the full-band signal jammer is turned on?

Can the mobile phone still be used after the full-band signal jammer is turned on?

Secondly, if the mobile phone shows that there is a signal, but the call quality is poor, it means that the shielding effect of the full-band signal jammer is in a critical state.

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Does the shielding instrument in the examination room include the 4.9G frequency band when shielding 5G signals? | #doll

Does the shielding instrument in the examination room include the 4.9G frequency band when shielding 5G signals?

Does the shielding instrument in the examination room include the 4.9G frequency band when shielding 5G signals?

According to the 5G frequency band standard divided by the International Telecommunications Union (ITU), there are three 5G frequency bands, namely the low frequency band of 700MHz~3.8GHz, the middle frequency band of 3.8GHz~24GHz and the high frequency band of 24GHz~100GHz.

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It is forbidden to bring mobile phones when installing signal jammers in special places | #jammer

It is forbidden to bring mobile phones when installing signal jammers in special places

It is forbidden to bring mobile phones when installing signal jammers in special places

Mobile phones are convenient and smart, and are widely used in our work and life. Mobile communication is the transmission of voice and data information in an open electronic communication system.

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What are the expanded applications of mobile phone signal jamming equipment in school teaching management? | #jammer

What are the expanded applications of mobile phone signal jamming equipment in school teaching management?

What are the expanded applications of mobile phone signal jamming equipment in school teaching management?

In the past ten years or so, it has become common for schools to purchase and install cell phone signal jammers, but most schools only use them as anti-cheating safeguards during the examination process, and only in some of the more important types of examinations.

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Which places need to be equipped with full-band signal jammers? | #doll

Which places need to be equipped with full-band signal jammers?

Which places need to be equipped with full-band signal jammers?

In some special areas, the control of mobile phones is relatively strict, such as prisons, police stations and other special control areas.

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