When using a keyboard shortcut to filter networks by signal strength, an indication of the active filter is displayed in the bottom right corner of the WiFi Explorer window.
Advanced filters
Filter networks by signal strength using keyboard shortcuts
Use keyboard shortcuts to filter networks by signal strength in WiFi Explorer.
You can filter networks by signal strength using keyboard shortcuts: a combination of the Control key and one of the keys representing the numbers from 0 to 9, or the keys below them (Q, W, E, …, I, O). If you set a filter using one of these shortcuts, you can clear it by pressing Escape.
For example, to display only networks with signal strength greater than or equal to -70 dBm, press Control-7. Similarly, to display only networks with signal strength greater than or equal to -75 dBm, press Control-U (the U key is below and between 7 and 8 on the keyboard, so it gives you the midpoint between -70 and -80 dBm). The same applies when using percentage (%) units for signal strength: 1 for 10%, Q for 15%, 2 for 20%, and so on.