I reckon that's illegal transmission.Using highly directional home made pair of Yagi antennas, a few years ago, I was able to provide a young relative living half a mile away with internet access via 2.3Ghz.
The channels made a difference to me when I could select them. Now, I can't and my speed is throttled by the channel congestion accordingly. I will be able to select once again, when my contract comes to an end.
I test speed using wifi because I am using wifi. What can be attained via wire will not be usable, except for being shared by multiple users so that each gets 32mbs even though the max wifi speed is 32mbs.