VHF/DF means Very High Frequency Direction Finder in NASA
Similar to VHF/DF
ACC - Aft Cargo CarrierACCA - Automatic Cloud Cover Assessment
ACCMS - Advanced Checkout, Control, and Maintenance System
ACCS - Advanced Checkout and Control System
ACE - Advanced Composition Explorer
ACE - Apollo Checkout Equipment
ACES - Acoustic Containerless Experiment System
View all in NASA