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What is signal gain?

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Gain is simply the measure of a booster’s or antenna’s signal output relative to its signal input. Gain is usually expressed in decibels (dB), a standard unit of measure for signal strength.

If a booster provides a maximum 50 dB gain, then the boosted signal coming out of the unit is up to 50 dB stronger than the unboosted signal that went into the unit.

In a practical terms, gain represents the relative level of signal boost that a booster and/or antenna is capable of providing. All other factors being equal, a booster with a higher gain value will provide a stronger signal and/or a larger coverage area than one with a lower gain value.

You'll notice weBoost signal boosters that provide the greatest gain are designed for installation inside larger buildings (like our Connect 4G). Those boosters designed to provide signal coverage for smaller areas, like a single room or the inside of a vehicle, have lower gain values.

To learn more about how antennas work watch this short video.

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