Grad Chapters?

Hey, I've searched far and wide but I haven't been able to find the answer. I'm an undergrad now, but how would one go about joining a grad chapter of Kappa Alpha Psi Inc.? I'm an athlete at my unversity and involved in some other major-related groups so I felt as though pledging wasn't an option in undergrad because I wanted to get my education and career going before I tried to cross the burning sands. I am not interested in any other org. My brother is a Kappa but he moved to florida and and just got married so its extremley hard to get ahold of him. Can anyone help me out?