dojammer's blog
In order to avoid being interrupted by the sudden ringing of mobile phones during the meeting, or to allow participants to concentrate on listening to the meeting content, and to prevent the meeting content from being leaked, using a conference room signal jammer is a very wise choice.
Conference room signal jammers suitable for use in small conference rooms. Currently, the market for conference room signal jammers is mainly divided into built-in antennas and external antennas. So, should you choose a conference room signal jammer with built-in antennas or external antennas? Antenna.
For conference rooms with a relatively small area, you can choose a conference room signal shielding device with an external antenna. This kind of external antenna shielding device is often relatively cheap and relatively economical. Let’s not talk about quality and workmanship for now. Some conference room signal jammers with external antennas even have antennas of different lengths. This will definitely affect the overall aesthetics of the conference room environment. Moreover, the cooling fan of the conference room cell phone blocker is If it is exposed to the outside, there will definitely be noise, which will affect the order of the meeting room.
If you choose a conference room signal jammer with a built-in antenna, the antenna cannot be seen from the outside of the shielding device. The antenna is not exposed, and the built-in antenna is also a kind of protection for the antenna. If the conference room signal shielding device with an external antenna needs to be transferred and used, if the antenna is accidentally bumped during the transfer process, the antenna can easily be knocked off. In this way, the machine can no longer be used and needs to be returned to the factory for repair. If you continue to use it, the radio frequency module inside the conference room signal jammer will burn out. If the conference room signal shielding device with built-in antenna needs to be moved, it is very convenient. You can directly grasp the groove handle on the back of the device. It is simple and convenient. Even if there is a slight bump, the internal antenna will not fall off, which can ensure the conference room signal shielding. normal use of the instrument.
To sum up, when purchasing a conference room signal jammer, it is recommended to choose a jammer with a built-in antenna.
A customer asked us: When performing the task of fleet safety protection, what is the interference effect of the vehicle-mounted cell phone signal jammer while driving? Will the actual interference effect be affected by the driving speed of the vehicle?
The above-mentioned application scenarios are usually targeted at government leaders or important VIP customers. They are equipped with a vehicle-mounted mobile phone signal jammer in the fleet where their vehicles are located, starting from the departure of the fleet until they arrive at a safe destination. During the entire journey, regardless of whether you encounter parking, traffic jams, low-speed driving, high-speed driving, etc., the on-board mobile phone signal jammer always keeps working continuously to ensure that the entire fleet, especially important people, are safe and sound. Vehicles can be completely and reliably protected. Prevent and prevent terrorists from detonating roadside bombs, car bombs, etc. through remote controls.
When a vehicle-mounted mobile phone signal jammer is parked (stationary) or driving at low speed, it is relatively easy to detect its interference effect on various signals. However, if it is in a convoy or driving at high speed, its effective interference range will still remain unclear. Change?
Based on our past experience in delivery acceptance and comprehensive testing, the interference effect of the vehicle-mounted mobile phone signal jammer under high-speed driving (vehicle speed ≥ 100Km/h) is slightly lower than the test results when stationary, and the magnitude of the decrease is About 10%~20%, the overall impact is not big.
However, customers need to be reminded that the interference distance and effect of car-mounted signal jammers will be affected by various factors for different signal types. For example: for remote control or walkie-talkie signals, etc., the difference in test results is not big when driving at low speed and high speed. For mobile phone signals of various standards, the difference is more obvious. This is mainly because the interference distance of the vehicle-mounted mobile phone signal jammer to the mobile phone signal is closely related to its distance from the mobile phone base station. When tested in a stationary state, the test results It is relatively stable. When driving at high speed, due to constant passing of base stations along the way, the mobile phone will also switch base station signals due to the distance from the base station and intermittent switching, resulting in the strength of the mobile phone signal always changing. Therefore, when the vehicle-mounted mobile phone signal jammer is driving, the interference distance to the mobile phone will always be in a dynamically changing state.
