Wireless AC or b/g??

[jnowland7]

I spent quite some time last night trying to figure out if my A+ is operating in Wireless AC or not.  After logging into the router, going to the open wrt option under "advanced", they only thing I could ascertain was that my A+ was operating in either b or g with about 296 mps.  I found previous discussions on this subject regarding what mode to choose.  I tried every mode available in the drop-down, never achieving more than the previously stated speed. 

I have this as a reference:

Here is an Example and what each field means:
11ACVHT40PLUS
 11 means 802.11 standard
 AC means Wireless AC
 VHT means VHT - Very High-Throughput
 80 means 80Mhz Channel Width

 The following table is a channel width breakdown for Wireless AC, you can find similar things for N:
Spatial Streams   20MHz     40MHz    80MHz
1                          86 Mbps  200 Mbps  433 Mbps 
2                          173 Mbps  400 Mbps  866 Mbps 
3                         288.9 Mbps  600 Mbps  1.3 Gbps 

I am using the 11ACVHT40PLUS however, I am not sure what the "Spatial Streams" are

Can someone please explain what I am doing wrong.  I see even today that Securifi is advertising the A+ on Amazon.com as a wireless AC router.  Is this false advertising, or am I experiencing operator error?  Please advise.  Thanks in advance

[Ashok]

@ jnowland7,

Are we checking the speeds on 5 GHz network or 2.4 GHz, because AC functionality works only with 5 GHz.

[jnowland7]

Well that definitely explains it.  Do most routers operate this way, or are there plans to have the 2.4 also operate in AC?  The description on Amazon.com is very misleading.  Thank you for responding.

[Ashok]

@ jnowland7,

It is common with any router, 2.4 GHz uses only 20 Mhz and if the network is not crowded we could set it to 20/40. However, 5 GHz AC functionality could go up to 80 Mhz.

[BikerBob]

Wikipedia has a pretty good explanation of WLAN:  https://en.wikipedia.org/wiki/List_of_WLAN_channels