WiFi AP channels

[Harry Bloomfield]

I have just installed a bit of software which scans and records the local to me WiFi signals....

With my own AP set up to use 11, the scanner shows me on 11 + 7. If I swap the AP channel to 1, it shows as 1 +5. My signal seems to span over both of those channels. Some of the others show as occupying two channels, some as just the one - why two please?

One of the (not mine) AP's most of the time shows as -85dB, but every few minutes it rises to -10db for a few seconds - why? This one shows as two channels, but only seems to be three wide.

[Andy Burns]

Is your AP set for 40MHz wide channels, rather than the usual 20MHz?

[The Natural Philosopher]

two channels can be used to get higher bandwidth.

No idea. Maybe the protocol is t0o transmit the SSID only, every few seconds.

[Harry Bloomfield]

I found it in the 'advanced settings' - 300Mbps, 270 and 130. Either

270 or 130 brings it down to centering on a single channel, the 300 occupies double width. Thanks!