Final exam for GVF Advanced Satcom Professional Certification. Also serves as the recertification exam. To open this exam, you must have completed course GVF 510 Edition 2, GVF 520, GVF 521, and the Basic Hands On Skills Test (HOST-B). If your certification has expired, take this exam to recertify, which will extend your certification for three years. Subscriber? Email support to request free enrollment in this exam and enrollment in or extension of 510 ed2, 520, and 521. Not a subscriber? Purchase this course and email support to request one-time 30-day extension of 510 ed2, 520, and 521, if previously enrolled. For more info, please see the FAQ page.