Values not lower than -65 dBm can be considered a quality Wi-Fi signal.
The higher the RSSI value (closer to 0), the better (stronger) the signal, and the closer to -100, the worse (weaker) the signal. The RSSI can take values from 0 to -100 dBm. Measured by the receiver in dBm (dBm, decibel relative to 1 milliwatt). The received signal strength indicator (RSSI) is used for measuring the strength of the Wi-Fi signal - it is the total power of the signal received by the receiver. From this information, you can determine the signal strength in different rooms and the range of your Wi-Fi network. With apps like this, you can see a list of nearby Wi-Fi networks, the numbers of the radio channels they are currently using, the signal strength of your router's Wi-Fi network, and the signal strength of neighbouring networks. Walk around your apartment with your mobile device running the app and check the signal strength in different places. Wifi Analyzer from farproc, WiFi Analyzer (open-source) from VREM Software Development, WiFi Analyzer from Zoltán Pallagi. There is a wide range of applications to choose from, e.g. If you want to check it to be certain, find the MCS-index and look it up:Ĩ02.11n datarates are based on a number of factors (MIMO,GI,20 vs 40 MHz etc.), hence the MCS-index.Using modern mobile devices, you can easily determine the level of Wi-Fi signal from the access point in different rooms of the apartment, private house, or office.įor example, take your Android smartphone or tablet and install a special free application to determine free channels and check the quality of Wi-Fi signal reception and strength. 300: it is probably because of GI (Guard Interval), using a shorter guard interval will give higher troughput, but it's usually turned off -> probably because of compatibility. Note: RSSI is a percentage and not a linear representation of how many dBm is actually reaching the card. For reference: 0 - No connectionģ00 - 802.11n on 5.0 Ghz (Normally I see this connect at 270 for some reason) The number to pay much more attention to is the Transmit Rate - the transmit rate will drop if you have too much noise or interference or if you are too far away from the base station. My laptop which I can roam around the house with never goes lower than -60 and never higher than -51. Currently my iMac is 20 feet (line of sight) from my wireless base station and fluctuates between -57 and -58 and is connected at full speed. Generally the higher (closer to 0) the better, and the closer to -100 the worse. RSSI or received signal strength indication can go from 0 to -100 (for Apple - other vendors can measure it differently as RSSI has no stated units.
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