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T1C05
Which of the following is a valid Group D call sign format for Technician class?
Pick an answer to check it.
Answer: A. KF1XXX
KF1XXX is a Group D format: two letters, a number, then three letters (a 2x3 call sign). Technicians may be issued Group D calls. KA1X and W1XX are short formats reserved for Amateur Extra licensees.
Tip: Group D = 2-by-3 call sign, like KF1XXX.