Which of the following is a valid Technician class call sign format?
The correct answer is A: KF1XXX. This is a valid Technician class call sign format. Technician class call signs follow the format of a single letter prefix (K, N, or W), followed by a number (0-9), and then one to three additional letters. The format KF1XXX fits this pattern: K (prefix), F (first letter), 1 (number), XXX (three additional letters).
Call sign formats vary by license class and region. Technician class call signs typically have formats like K#XXX, N#XXX, or W#XXX where # is a number and XXX represents one to three letters. The specific format depends on the call sign district (the number) and available call signs. Option B (KA1X) has only one letter after the number, which may be valid but is less common. Option C (W1XX) has only two letters after the number, which is also less common for new Technician licenses.
Exam Tip
Technician call sign = K/N/W + number + 1-3 letters. Remember: KF1XXX is a typical format - single letter prefix, number, then multiple letters. This is the most common format for new Technician licenses.
Memory Aid
"**T**echnician = **T**ypical format **K**/**N**/**W** + number + letters (think 'T = K/N/W + # + XXX')"
Real-World Application
You pass your Technician exam and receive your sequentially assigned call sign KF1ABC. This follows the standard Technician format: K (prefix), F (first letter), 1 (your call sign district), and ABC (three additional letters). This format is typical for new Technician class licenses issued by the FCC.
FCC Part 97.19Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. KA1X format may be valid for some older licenses, but it's not the typical format for new Technician class licenses, which usually have more letters after the number.
Option C: Incorrect. W1XX format with only two letters after the number is less common for new Technician licenses.
Option D: Incorrect. Not all options are correct. KF1XXX is the most typical format for a new Technician class license.
题目解析
The correct answer is A: KF1XXX. This is a valid Technician class call sign format. Technician class call signs follow the format of a single letter prefix (K, N, or W), followed by a number (0-9), and then one to three additional letters. The format KF1XXX fits this pattern: K (prefix), F (first letter), 1 (number), XXX (three additional letters). Call sign formats vary by license class and region. Technician class call signs typically have formats like KXXX, NXXX, or WXXX where is a number and XXX represents one to three letters. The specific format depends on the call sign district (the number) and available call signs. Option B (KA1X) has only one letter after the number, which may be valid but is less common. Option C (W1XX) has only two letters after the number, which is also less common for new Technician licenses.
考试技巧
Technician call sign = K/N/W + number + 1-3 letters. Remember: KF1XXX is a typical format - single letter prefix, number, then multiple letters. This is the most common format for new Technician licenses.
记忆口诀
**T**echnician = **T**ypical format **K**/**N**/**W** + number + letters (think 'T = K/N/W + # + XXX')
实际应用示例
You pass your Technician exam and receive your sequentially assigned call sign KF1ABC. This follows the standard Technician format: K (prefix), F (first letter), 1 (your call sign district), and ABC (three additional letters). This format is typical for new Technician class licenses issued by the FCC.
错误选项分析
Option B: Incorrect. KA1X format may be valid for some older licenses, but it's not the typical format for new Technician class licenses, which usually have more letters after the number. Option C: Incorrect. W1XX format with only two letters after the number is less common for new Technician licenses. Option D: Incorrect. Not all options are correct. KF1XXX is the most typical format for a new Technician class license.
知识点
Call sign formats, Technician class, Call sign structure, FCC call signs
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.