Well I have noticed that some routers, and others don't get good range any more for some reason. Not sure why. I know old routers like Linksys WRTs and older Dlink got better range. It's possible that some of these routers were scaled back on the power..possibly a marketing thing too. If you think about it, if they had routers that got too range, then some reasons why not to by extenders and relays. I hate marketing sometimes. I know that when I get my house done up, I'm going to have the router and one main DAP unit to extend the range and be done with it. 40ft is a good distance. Might be time for extender or relay man.