Thanks for the reply, but having reread the entire thread several times both before and after posting, I still can't see where it confirms that the functionality is there? On the contrary there are several posts that seem to indicate that if I have my country set to United Kingdom I shouldn't be seeing the tick box option for wide channels, hence my confusion in the first place.If you'd actually read the thread you'd see that the functionality is there, but using it is illegal in the UK. Presumably Apple hasn't bothered to restrict it just for the few countries where this is relevant.
Say I have a AEBS at 5GHz and take it to the UK (say I go live there for sometime).
Will I get in trouble if I use the 5GHz spectrum?
You may be invited to reside in the Tower of London.
Well, always assuming that you get caught doing this, which is unlikely unless you cause a problem for someone using this spectrum legitimately, then it would be difficult to justify anything more than a warning. After all you're using features of equipment bought in this country, from a company you could expect to comply with relevant legislation and it regards an issue that you'd have to go to a specialist forum or publication to find mention of.