Do non-overlapping channels overlap?

We all know the "non-overlapping" channels 1/6/11 in 2.4GHz (5GHz matter is similar). Do they really not overlap? I keep bumping into this in conversations, and would like to create a point of reference (with pictures) instead of having to repeat same old over and over. Since we a dealing with broadband technology, the signal...

WLAN Channel Management F1 Style: Part 2 of 3

Part 2 of the mini-series. Today we will review the results and some details of the experiment. The University has an enterprise-grade WLAN from a Tier1 vendor. The overall amount of APs under test is 100 (plus up to 90 neighbouring APs not belonging to that network). They represent a portion of the bigger campus...