WLAN Analysis with Wireshark (802.11 Radio Information, Part 2)

Let's continue our discussion on the section of 802.11 Radio Information inside a Wireshark capture. Allow me to attach a diagram here.

Turbo Type: Turbo mode increases throughput by utilizing a wider channel of 40MHz instead of the normal 20MHz. In this example, it shows Non-turbo being set up, which corresponds with other information, such as Static Turbo (display filter, radiotap.channel.flags.sturbo) and Turbo (radiotap.channel.flags.turbo) in the section of radiotap. We may also refer to the diagram listed below.

Turbo mode can be configured

• Static mode, or
• Dynamic mode

Despite the fact that channels 6, 40, 48, 56, 153 and 161 are suitable for Turbo operation, but it really depends upon whether AP or STA (1) is capable of having this feature, and (2) has activated such function. The following diagram shows, even in channel 40, that STA is not Turbo capable, as no information is displayed in Wireshark capture on such sub-field.

At the same time, the below diagram shows, WLAN packet in channel 157, not belonging to any one of the options indicated above. The turbo mode is not functioning either. 

Quiz Review:  If the "Static Turbo" subfield in above diagram is showing False, does that mean it is in Dynamic mode?