The issue of bad cellular reception and dropped calls is still common in this age of enhanced connectivity, and there are multiple reasons for it. One of the reliable solutions to avoid this is to use a cellular signal booster at your home or office. receive weak signals, amplifies them, and retransmits to your cell phone to ensure better call quality. The performance of a signal booster is determined by the factors dB gain and dBm, and the purpose of this article is to better understand them.
The Signal Strength
Signal quality in cell phones is usually represented by bars, but they do not represent actual signal strength, and it can vary between carriers. The ideal way to know this is to look for it in the carrier SIM settings of your phone, and it will be provided in dBm.
Decibel (dB) Gain
Decibel (dB) gain of a cellular signal booster is a positive value that indicates the gain of the device; the higher it is, the better and vice versa. In-vehicle phone cradle boosters usually have the lowest gain, and it is usually +23 dB. Listed below are the increase in cellular signal power for different values of dB Gain.
- +23 dB Gain – Signal power increases 200 times
- +50 dB Gain – Signal power increases 100000 times
- +72 dB Gain – Signal power increases 16 million times
+72 dB Gain cellular signal booster is used as a multidevice booster at home or offices.
The performance of the cell service booster also depends on the strength, i.e. quality of input carrier signal, and it is measured in decibel milliwatts (dBm). Also, you must know that it is a negative number. Listed below are the different scenarios.
- -50 dBm: This is considered optimal or excellent signal strength and you get this value near the cellular tower.
- -80 dBm to -90 dBm: Cellular signals in this range are of medium strength and a cell service booster is required to improve such signals to avoid dropped calls.
- -110 dBm: Areas receiving signals of this strength are dead zones, and your phone displays no service.
On a final note, when using a booster, signals of excellent strength can cause signal overloading of the amplifier, and this is indicated by the orange blinking light on the device. Such signals do not require boosting, or the issue can be avoided by reducing the gain of the device. This is a point that you must keep in mind when using a cell service booster at home or office.