
Performance and Principle of Pull-bar Box Shielder for Mobile Phone
Many users who use the pole box mobile phone shield
do not know how it works, and often use it beyond the frequency range,
resulting in poor results.
The formation of mobile communication work is that
in a specific frequency range, wireless devices (mobile phones, etc.) and base
stations are connected by radio waves to complete data and sound transmission
at a specific baud rate and modulation mode. When the mobile phone communicates
with the base station, it connects with the base station through the upstream
frequency, and then transfers the signal to the Mobile Business Exchange Center
for call or data connection. When the mobile phone is in standby, first the
mobile phone sends a signal to the base station to register with the network,
so that the mobile phone can get in touch with the base station. Once the
demand for mobile phone calls is displayed, at the first time, the mobile phone
is assigned to the mobile phone business channel according to the actual
conditions of the channel near the mobile phone, so that the mobile phone can
jump to the business channel and complete the call and data transmission. At
the same time, wireless communication must ensure sufficient signal-to-noise
ratio to complete reception and effective communication.
Therefore, the interference range will be affected
by the field strength in the interference area when the pole-box mobile phone
shielder is working at a certain power. It is important to know that no matter
how high power the pole-box mobile phone shielder is, as long as the
transmission power is a fixed value, the interference signal strength of the
pole-box mobile phone shielder will be attenuated and the interference ability
will be attenuated as the distance increases. This is why the interference
range of the pole-box mobile phone shield is also different under different
signal field intensities. Nanjing Baikang Mechanical and Electrical Technology
Co., Ltd., a manufacturer specialized in producing pull-bar box mobile phone
shield, can customize the scheme according to your needs.
"Shengma"
pull-bar box Shielder | Nanjing Baikang
Mechanical Technology Co., Ltd-ljw
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