Tips-&-Tricks.md

@@ -151,6 +151,16 @@ For the SparkLAN card, the field value that is output will be `brcmfmac`
 
 Note that the pipe through `tr` in the above command is just because the output of the command may be too wide for the default terminal window. You can leave off the pipe through `tr` _if_ your phone is in landscape mode _or_ you use `ssh` into your phone from another computer and therefore type the command from another computer.
 
+To monitor the signal strength of your WiFi reception, you can use either the `iw` command or the `nmcli` command, as follows.
+
+`sudo iw dev wlan0 scan | grep -E '^BSS|freq:|signal:|SSID'`
+
+Depending on the complexity of your network, you may not need to display all 4 pieces of information. This gives the signal strength in dBm, which is a logarithmic scale. The signal strength will nearly always be a negative number. A greater number is a stronger signal. For example, -60 dBm is (ten times) stronger than -70 dBm.
+
+`nmcli -f "CHAN,BARS,SIGNAL,SSID" d wifi list`
+
+This gives a "signal quality" value, typically in the range 0 to 100. A greater number is a stronger signal.
+
 ### Backup
 
 See this thread: <https://forums.puri.sm/t/new-post-app-showcase-backups/11459>. Alternatively: [Example of a quick backup solution](https://forums.puri.sm/t/received-my-librem-5-evergreen/10877/195) using rsync and a systemd timer