Hi, I havn't posted for quite some time yet I have been reading through from time to time. I would like to ask about Radars. I wish to be able to look at a radar antena and be able to say as possible. Such as frequency ranges from the antenna size etc... Does the size of the 'Ball' in which it is in tell me anything? Thank you, P.S. Can a radar detect friendly or foe according to some physical parameters?