Bitte beachtet die Information von der FCC, welche auch für US Amateurfunk-Lizenzen gültig sind:

ARRL The National Association for Amateur Radio® reports that the Federal Communications Commission (FCC) adopted changes to its rules to require that every holder of an FCC Registration Number (FRN) update their contact information in the CORES system (email and postal addresses) within ten business days of a change. 

siehe auch: FCC Requires That FRN Contact Information Be Updated Within Ten Days of a Change


73 de Herbert OE3KJN, AI6HN