Ideally you need good communication skills, spontaneity and good listening skills. Along with that you need to be aware of current topics to be able to hold the discussion. You need confidence and be able to react spontaneously and intellectually. Good sense of humour can help you in this profession. A diploma and certification course in Radio Jockeying after 12th is preferable. Graduates in any stream with a Diploma or a Post Graduate Diploma in Programming and Broadcast Management are preferable. Usually there is no upper age limit.