I have an Airport Extreme (2009 dual-simultaneous 5 Ghz and 2.4 Ghz). I clicked "option" and the WiFi icon on the menu bar and see that I am on the 2.4 Ghz frequency when I am in my bedroom which means I am too far away from the Airport Extreme to beneficially utilize 5 GHz. If I buy an Airport Express to extend my network, would the Express boost the signal from the Extreme so that I could use the 5 Ghz frequency or would the Express just simply extend the 2.4 Ghz signal? Don't understand the effect of adding another router. I don't need the 2.4 extended. I'd like the 5 Ghz boosted. What if I spent extra money and got the new Airport Extreme that an "ac" router. My current Extreme is only a "n" router.