This is the lowest value that will deliver acceptable results for most online services. Anything from -30 dBm to -50 dBm is excellent and is often about as high as you can get. ![]() This is the maximum signal strength you could achieve, and it probably means you are within a couple feet of the Wi-Fi router. Here are some guidelines for assessing your signal strength: Moreover, a 10 dBm change adds up to ten times more or less strength. In addition, signal strength isn't linear it's logarithmic, which means that every 3 dBm change represents a halving or doubling of the strength of the signal. For example, -80 dBm is a much weaker connection than -30 dBm. In other words, the larger the absolute value, the weaker the network connection. ![]() Dave Johnson/Business Insider How to interpret your network's signal strengthÄecibels are expressed as negative numbers, and the closer to zero the number, the stronger the signal. InSSIDer is a free app you can use to see your wireless network's signal strength.
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