When customers purchase mobile phone signal jammers, generally as long as they do not make special instructions, the manufacturer's default factory frequency band does not include the shielding module for GPS positioning signals. However, if the customer orders the shielding device, it is very clear. : It is necessary to shield GPS positioning signals while shielding all mobile phone signal lights, so the manufacturer can specifically add the shielding module of the GPS frequency band to the device.
Why is there no GPS frequency band in the default configuration of the low-power mobile phone signal jammer? There are three main reasons: the first reason is that low-power cell phone signal jammers are almost always used in fixed indoor environments, and the GPS signal itself in the indoor environment is very weak, or even there is no GPS signal, and the GPS signal is shielded. The function is also useless. The second reason is that the primary purpose of the low-power mobile phone signal jammer is to shield the mobile phone signal. In order to reflect the shielding performance of the mobile phone signal as much as possible, the manufacturer's preferred solution is: the number of effective signal shielding modules, Allocate as many frequency bands as possible to mobile phone signals. The third reason is that in order to control the production cost of the mobile phone signal jammer manufacturers, if a function is not required by the customer, then install one less module. After all, it can reduce some production costs and improve the performance of some mobile phone signal jammers. Price advantage.
However, it needs to be reminded that today's GPS positioning signal is just a general term, and it does not specifically refer to the GPS navigation satellite signal of the United States. In fact, it should at least include China's Beidou, Europe's Galileo, and Russia's GLONASS, etc. etc. When GPS signal shielding modules are added to the satellite navigation and positioning systems of these multiple countries and types, they should all be able to effectively cover them.
