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Is the GSM900 in the network jammer only a 2G jamming signal?

Is the GSM900 in the network jammer only a 2G jamming signal?

  • 2022-07-21

In the product introduction of many network jammers, the logo about the GSM900 frequency band will be marked, which indicates that the device has the signal interference capability for the GSM900 frequency band. Some customers therefore asked a question: Is the GSM900 frequency band the same as the 2G frequency band? Is the GSM900 in the network jammer only a 2G jamming signal?

If this question was put 10 years ago, the answer is correct. The GSM900 frequency band at that time really refers to the frequency band of the 2G standard. The GSM900 frequency band in the network jammer is the coverage of the interference signal in the frequency range where the downlink signal is located. , the specific frequency range is: GB: 930-960MHz, European standard: 925-960MHz.

However, today, with the development and rapid development of 4G and 5G, as well as the 2G network withdrawal project that various operators have already started, each operator has launched a re-cultivation strategy of the GSM900 frequency band, which has re-engineered the original GSM900 frequency band. Deployment and distribution, which leads to the fact that not only part of the GSM900 frequency band is the original 2G network, but also 3G and 4G mobile phone signals are mixed.

Although these adjustments have been made above, in fact, it has no substantial impact on the network jammer. Because even if 3G and 4G signals are added to the GSM900 frequency band, the overall bandwidth of this frequency band has not been greatly adjusted. The interference signal of this frequency band in the network jammer still completely covers 930-960MHz.

Finally, we provide a supplementary information: the frequency range of 930-960MHz in the range of the network jammer, of which 930-933MHz belongs to China Railcom, 935-949MHz belongs to China Mobile, and 949-960MHz belongs to China Unicom.

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