Why Do You Need A Cellular Signal Filter?

A man smiling while looking at his phone.

A cellular signal filter has the exact function that its name suggests, filters out unwanted signals. The device is used in association with a cell phone booster to solve the performance issue of the booster. 

Cell phone boosters are designed to boost the cellular signals available at your place and improve cellular reception. However, booster performance can sometimes be affected by various issues. Overload is one such issue. Cellular signal filters are used to resolve the issue of signal overload. 

What Is Overload? 

Usually, a cell phone booster has three major components, external antenna, amplifier, and inside antenna. The input signals, that is, the available external cellular signals are captured by the external antenna and are boosted by the amplifier. The amplified signals from the booster are then broadcasted by the inside antenna. 

Overload is caused by too strong cellular signals entering the booster system via the external antenna. If the issue is caused by the small distance between the external antenna and cell tower, redirecting the antenna would solve the issue. However, this isn’t always the reason for the problem of overload. 

Why Do You Need A Signal Filter?

As mentioned before, the short distance between the cell tower and external antenna may not always be the cause of the overload. In some cases, a tower of some other carrier might stand between your carrier’s tower and external antenna. In that case, the signals from this obstructing tower will be forcing too strong signals into the booster system via the outdoor antenna, causing overload. Redirecting the external antenna is not a solution here. You will need a cellular signal filter. 

A cellular signal filter can filter out the unwanted signals and selectively permit your carrier’s signals alone into the booster system. The filter is installed between the outdoor antenna and the amplifier. Connect one side of the filter to the cable coming in from the outside antenna and the other side to a short jumper cable that is attached to the outside antenna connection on the amplifier unit of the signal booster. 

You will have to do some research to decide which filter you should install. Know the carrier/carriers that are used within the building, know the channels those carriers are using and identify the channel that is causing the overload. You may use a signal meter to acquire all the necessary information. After you make an idea about the channels that you should keep, you can buy an appropriate signal filter.