RadioTelephone Tutor helps you study for the FCC GROL , plus Radar Endorsement License. Often times, test questions are worded in ways; that fool you. RadioTelephone Tutor drills till you know the answers backwards and forwards. Drills on missed questions. Can take entire question pools in straight, or random order. RadioTelephone Tutor creates a practice test; which represents what you would be given in a real exam.