> I don't have any Android devices with 5Ghz.... only my two Linux laptops.
> 
> Otherwise, its WiFi Analyzer that I use to see what the 2.4Ghz networks are 
> like around me.

Are the laptops' wireless cards mini-PCI? It's easy enough, and fairly cheap, 
to simply replace the built-in cards with cards that operate in both 2.4 and 
5.x bands. 

http://www.roc-noc.com/mikrotik/minipci/radio/R52H.html is one such card that 
I've used before (caveat: not on Linux, I'm not sure how well the ath5k drivers 
work), with good success.

Once you have a card that can see the 5GHz band, you can then use the same 
laptop tools you'd use for 2.4GHz.

David Smith

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