WifiSurveyor
WifiSurveyor looks at each Wi-Fi channel three ways at once — who is there (network discovery), how much RF energy is there (spectrum analysis, from an RF Explorer), and how well the channel actually performs — and puts the answers side by side.
The three do not always agree, and that is the point: a channel can be full of access points yet perform well, or look empty to a Wi-Fi scan and still be swamped by something that is not Wi-Fi — a microwave oven, a video sender. Seeing all three tells “crowded with Wi-Fi” apart from “noisy with interference”, which need different fixes.
What you need
An RF Explorer plugged into the Wireless Toolbox, with its active radio module covering the Wi-Fi band you want: 2.4 GHz, 5 GHz, or both. Without one, the menu will not start WifiSurveyor. On an RF Explorer with more than one radio module, make the right module active on the RF Explorer itself.
Choosing the band
Switch between 2.4 GHz (channels 1–11) and 5 GHz (the nine non-DFS channels: 36–48 and 149–165) with the toggle at the top of the left panel. A band the RF Explorer's active radio cannot reach is greyed out.
Left panel
- 2.4 GHz / 5 GHz — the band the charts show.
- Access-point list — every access point with its SSID (name), BSSID (address), signal in dBm, channel and security. Tap a row to hide or show that access point in the Site Survey chart.
- Select all / Deselect all — show or hide every access point at once.
- Show Hidden / Hide Hidden — include or leave out networks that broadcast no name.
The four charts
The charts are stacked on one screen and share the same channel axis, so you can read straight down a channel.
| Chart | What it shows |
|---|---|
| Site Survey | Network discovery: each access point drawn as a signal “mountain” over its channel. Network names are placed strongest first so that none prints on top of another; one that will not fit is left off the chart, and the list on the left still names it. |
| RF Spectrum Waterfall | From the RF Explorer: the strongest RF energy in each channel over time. A column that stays warm is a real emitter, Wi-Fi or not. |
| Channel Performance Score | How good each channel really is. A bar's height and colour are the score (0–100, green best, red worst): the transmit rate a real test transmission achieves, as a percentage of the fastest channel. The number above each bar is that channel's transmit rate in Mbps. |
| Performance Over Time | The score for each channel, one row per completed sweep. |
How a cycle runs
The work repeats in a cycle: the Wi-Fi adapter scans for networks; it then goes silent for a moment so the RF Explorer can take a clean spectrum reading; then it runs the performance sweep across the channels. Because of that, the waterfall advances in steps rather than continuously, and a full cycle takes a couple of minutes. While it is working, the Wi-Fi symbol in the title bar lights up arc by arc.
If the spectrum stops updating
If the RF Explorer stops sending data, WifiSurveyor says so on the page. Switch the RF Explorer off and on with its own power switch; then return to the menu and start the tool again.
Menu (⋮)
- Save as PDF — see below.
- About — version information.
The ☰ button (top-left) returns to the Wireless Toolbox menu.
Save as PDF
The ⋮ menu (top-right) has Save as PDF. It captures the tool exactly as shown and writes one file to your device’s Downloads folder, named with the tool and a timestamp, e.g. WifiSurveyor 2026-08-13 14.32.05.pdf. Every save is timestamped, so nothing is overwritten.