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CELL PHONE SIGNAL BOOSTER HOME 4G
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Determine Signal Strength
Having an accurate measurement of signal strength in decibels
(dBm) is crucial when installing your system.
Decibels accurately measure the signal strength you are receiving.
Decibels are not linear: A seemingly small increase in dBm can
make a huge dierence in signal strength!
DECIBEL GAIN POWER INCREASE
3dB 2 times the power and signal amplification
6dB 4 times the power and signal amplification
10dB 10 times the power and signal amplification
12dB 16 times the power and signal amplification
20dB 100 times the power and signal amplification
SIGNAL STRENGTH EXCELLENT GOOD FAIR POOR DEAD ZONE
3G/1x
(typically voice)
-70dBm -71 to -85dBm -86 to -100dBm -101 to -109dBm -110dBm
4G/LTE
(typically data)
-90dBm -91 to -105dBm -106 to -110dBm -111 to -119dBm -120dBm
-80
dBm
Distance from Cell Tower
CELL
TOWER
Signal Strength
GOOD
Signal Strength
POOR
Signal Strength
DEAD ZONE
Signal Strength
EXCELLENT
Signal Strength
FAIR
3G/1x
4G/LTE
-70dBm
-90dBm
-75dBm
-100dBm
-90dBm
-108dBm
-105dBm
-115dBm
-110dBm
-120dBm