@Rakeman:
I know, it just appears that Radar gives you a powerful advantage PLUS free units/tech rolls. Most techs give you an advantage, units, or tech rolls. Of course, you know more than I do about Enhanced so if you say the NAs are balanced, I’ll take your word for it until play experience shows otherwise… 8-)
Radar is a commonly taken UK NA, part of the reason is because it’s a multi-use NA.
It can be helpful in more than one way: Tech dollars can be for jet power (helpful for the defense-needing allies) or combined arms (offshores baby!) or super subs…(no so much). Adding the aaa gun capability to the UK BB’s can be a huge factor in battle for the atlantic.
An extra AA gun is a bonus, not such a key component of the NA. Can be useful in an Australian IC.
did I fail to mention the ability to shoot down planes @ 2!
Remember there are other very powerful UK NA’s too that must ‘balance’ to Radar:
Commonwealth
Royal Navy
Royal Air Force
Colonial Garrison
One I don’t see too much is UK Lend-Lease.