Overcoming Challenges of Strong Cell Phone Signals from Nearby Base Stations
In today’s increasingly connected world, the issue of cell phone signal interference has become more prevalent, especially in areas where base stations are located in close proximity to the site. This article explores the challenges faced when attempting to block or suppress cell phone signals using conventional low-power signal blockers and presents effective solutions to overcome these obstacles.
A recent customer inquiry revealed a photograph showing a base station located less than 100 meters away from the site. Upon further investigation, it was discovered that the customer had used a mobile signal software to measure the signal strength of the base station, which ranged from -20dB to -30dB. The customer had also tested a common low-power signal blocker, which had an output power of 2-3W per channel. However, the measured signal strength at the antenna output of the signal blocker was only -45dB to -50dB. This significant difference in signal strength clearly indicated that the conventional low-power signal blocker was unable to effectively block or suppress the cell phone signals at the site.
The Need for Alternative Solutions:
Instances where base stations are located too close to the site, resulting in excessively strong cell phone signals, are becoming increasingly common. In such scenarios, relying on conventional low-power signal blockers to achieve signal blocking becomes impractical. Therefore, alternative solutions must be considered to address this issue effectively.
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Solution 1: Upgrading to High-Power Signal Blockers:
One viable solution is to significantly increase the budget and replace the originally planned low-power signal blocker with a high-power model, such as our SMa-818K200 high-power cell phone signal blocker. This model offers an output power of 50W per channel, with antenna output signal strength ranging from -25dB to -33dB. By utilizing this high-power signal blocker, a certain level of signal blocking effectiveness can be achieved in scenarios where base stations are located too close and transmit excessively strong cell phone signals.
Solution 2: Collaborating with the Network Operator:
Another solution involves coordinating with the network operator responsible for the base station in question. Discussions can be initiated to explore the possibility of reducing the transmission power of the base station or adjusting the orientation of the antennas (directional antennas) facing the area. Ideally, the angle of adjustment should be greater than 60 degrees to effectively lower the signal strength in the area. This approach can enhance the coverage distance of low-power or medium-power cell phone signal blockers, thereby improving their effectiveness.
When faced with the challenge of cell phone signal interference caused by nearby base stations, relying solely on conventional low-power signal blockers proves to be ineffective. By considering alternative solutions such as upgrading to high-power signal blockers or collaborating with network operators to adjust base station parameters, the issue of signal interference can be effectively addressed. It is important to note that even with these solutions, the quantity of wireless signal blockers required may still exceed that of a typical site environment.