Question T1C06
From subelement T1 - T1C
From which of the following locations may an FCC-licensed amateur station transmit?
Why is this correct?
The correct answer is D because FCC Part 97.5(a)(2) specifically authorizes amateur stations to transmit from vessels in international waters only if those vessels are documented or registered in the United States. Options A, B, and C are incorrect because they suggest blanket authorization based on ITU membership, UN membership, or ITU regions, but amateur stations cannot automatically operate in foreign countries without specific authorization from those countries' administrations.
Memory tip
Remember that amateur radio licensing is territorial — your FCC license gives you privileges in U.S. jurisdiction, which extends to U.S.-registered vessels in international waters. Foreign operation requires reciprocal agreements or permits from host countries, regardless of international organization membership.
Learn more
In practical amateur radio operation, this rule becomes important for maritime mobile operations during ocean crossings or while anchored in international waters. U.S.-registered cruise ships, cargo vessels, and private yachts can host amateur stations under this provision. The key principle is jurisdictional extension — just as embassy grounds extend a country's legal jurisdiction, U.S.-registered vessels carry U.S. amateur privileges into international waters under maritime law.
Think about it
Why do you think the FCC requires U.S. vessel registration rather than simply allowing operation from any ship in international waters?