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Written by Sadia Jahangir
31st Dec, 2022

How to Avoid Oscillation or Feedback in the Installation of Cell Signal Boosters

You made time for the installation of the device in your busy schedule. You became familiar with the distinctions between bars and dB after reading our article on signal boosters. The outside antenna was set up where the outside signal was strongest, and it was aimed in the direction of the nearest cell tower. Lastly, you connected everything with the correct wires and installed the inside antenna where you most need the strengthened signal. You even set up an account with your carrier.

The only thing left to do was to turn on your amplifier and enjoy your signal’s increase. Yet as soon as you did, you realized there was a problem. Instead of being green as they should be, the lights are red, blinking green, blinking red, or orange. And to make matters worse, the signal boost you were promised is little to none.

This is a well-known instance of oscillation, commonly referred to as feedback; nonetheless, it does not imply that the signal booster is ineffective.


What is feedback, or signal oscillation?

One of the most frequent responses to the query “Why doesn’t my cell signal booster work?” is oscillation. Your two cellular antennae are experiencing a feedback loop as a result of being placed too close to one another.

Consider a microphone and a speaker. An unpleasant humming sound is produced when you place the microphone too close to a speaker; it gets louder and louder the closer they are. This is oscillation, and your antennas also experience it.

By putting more space between the three parts of your signal booster, you can solve this issue. To avoid oscillation, you must space your antennas at least 20 feet vertically or 50 feet apart horizontally. Regrettably, you might need to adjust one or both antennas to a slightly less ideal location if you’ve set up your antennas for your optimum setup to stop the oscillation. The performance of the booster will, however, significantly improve, which should more than make up for the fact that the broadcast antenna might not always be in the ideal location.

Booster Overload

You can yell, “But my booster isn’t working at all.”

You might perhaps be too skilled at installing your antenna in that instance. Weird? Yeah. but conceivable

Why do I say that? Overload is a possibility with the majority of consumer boosters. You can be overloading your signal booster if you purchased a less expensive signal booster, have great outdoor coverage but poor indoor reception and use high-gain antennae and cable. The booster shuts down as a result to protect itself.

Fortunately, there are several options on how to solve this and it’s really simple to do so.

We sell attenuators to modestly reduce the quantity of signal you’re bringing in and prevent overload if you want to throw money at the issue and solve it quickly. Commercial-grade amplifiers are also available that automatically weaken the signal you are getting, but these are very expensive and overkill for most household setups.

You will need to position your antenna differently if you don’t want to invest any further money. There are two ways to do this: either move it to a location where the signal is weaker than it is now or turn it away from an overpowering signal to weaken it. As long as you don’t mind climbing back up on the roof, this is the simplest and least expensive approach.

Automatic Vs Manual Gain Control: The Pros & Cons

Some boosters feature safeguards against overload. It differs from booster to booster and is referred to as “gain control.” Owners of cell phone boosters can manually modify (by boosting or lowering) the incoming signal strength into the structure. By doing this, signal oscillation and cell tower overload are prevented. For instance, you wouldn’t pour the entire box of detergent into the washer. The right quantities for the right load.

Wilson Electronics weBoost models have had automatic gain controls since 2013, eliminating all the guessing and hassle. Yet, the question of whether automatic gain controls are superior to manual settings still stands.

Automatic Gain Controls

Using a cell phone booster is made significantly simpler by automatic gain control models. It optimizes for all five frequency bands and supports all significant US and Canadian carriers, including AT&T, Verizon, T-Mobile, Rogers, Bell, and Telus, using a set-it-and-forget-it strategy.

This makes it possible to maximize signal strength and coverage while maintaining smooth communication with the cell tower. In summary, automatic gain control is the strategy that just “works” for the majority of consumers. If the booster receives excessive gain, it will completely shut down rather than suffer harm or disrupt the network of cell towers.

Manual Gain Controls

If you frequently stream videos using cellular data, the best way to permanently improve streaming speeds at home and on the go is to invest in a cell phone signal booster.

The majority of the time, a bad connection is to blame for video buffering. Most of the time, factors that are beyond one’s control, like:

Often, high-end and commercial signal boosters have manual settings. Why are manual gain controls necessary? Choices and efficiency are two terms.

The manual and automatic transmissions in a car are the closest comparison. Those who are truly skilled at changing gears by hand typically use less gas.

The same reasoning can be used to explain manual gain. Installers, integrators, or individuals familiar with RF signals can favor some carriers over others (such as Verizon over AT&T) and provide a stronger boost by independently changing each of the five frequency bands.

Which Gain Control Type Reduces Overload the Best?

Let’s list each’s benefits and drawbacks:



  1. Provides the optimum signal for all carriers automatically.
  2. Just leave it alone.
  3. Ideal for regular users.


  1. There is no preference for a particular carrier or band.



  1. Make specific adjustments for each frequency band.
  2. Favoring particular carriers.
  3. Ideal for those who are familiar with cellphone signals.


  1. Just a somewhat better performance boost with extra labor.

The truth? Although automatic gain control is easier to use, a signal booster system with manual gain control will yield better results for users who are competent at interpreting signals and comprehending cellular bandwidths. One is not superior to the other; rather, it depends more on the customer’s understanding and expertise of cellular signals. Automatic gain control will be simpler to utilize for the typical person. A booster with manual gain control is what you want, though, if you’re an installation or integrator because it will improve performance.

How can we assist?

The top seller of cell phone signal boosters is Bftsync. For use in the house, workplace, or automobile, cell phone boosters amplify 5G, 4G, LTE, and more for any phone with any carrier.

We detest dropped calls and inadequate coverage, thus our mission in life is to eradicate spotty signal one satisfied customer at a time:

  • Contact our US-based customer service at for a free consultation (ask us anything) or give us a call at 1-281-616-5786.
  • Free delivery.
  • Better signal or receive a 90-day money back guarantee.
  • All of our items come with a 2-year guarantee and lifetime technical support because we want everyone to be happy.


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