Plain-language answer: VUCC is ARRL’s VHF/UHF Century Club award program for confirmed contacts with Maidenhead grid locators on eligible bands.
Why it matters
Required grid counts and band-specific rules vary; a contact near a grid boundary requires accurate station locations.
Use it correctly
Use sufficient locator precision, record both station grids at contact time, and follow current confirmation and satellite-contact rules.
The common mistake
Using a profile’s home grid when the station operated portable elsewhere.
Decision boundary
Current regulation, program rules, manufacturer limits, exact station configuration, and live observations control. Recheck changing rules, solar conditions, and operating status before acting.
