I think that 2.4GHz having longer range is a myth. When I worked on WiFi for Google Fiber we tested it pretty extensively and didn't see any common building materials that attenuated 2.4GHz more than 5GHz. Historically, the problem was that routers often selected low-power channels for 5GHz. If you use a channel where the maximum power is permitted, 5GHz is just as good.
The 5GHz band plan is kind of complicated. You will want to ensure that you get a 160MHz channel. How you accomplish that varies by region, unfortunately.
Oddly the C6 was announced before the C5 I think is only now making it's way onto devkits.
> When I worked on WiFi for Google Fiber we tested it pretty extensively and didn't see any common building materials that attenuated 2.4GHz more than 5GHz.
Huh interesting, I might have to play with that at some point (I'm hoping either ubiquiti or openwrt will let me do that).
