What information is contained in the preamble of a formal traffic message?
The correct answer is D: Information needed to track the message. The preamble of a formal traffic message contains tracking information that allows the message to be followed through the amateur radio network. This includes message number, precedence, handling instructions, station of origin, check (word count), place of origin, time filed, and date.
The preamble is the header information that appears before the actual message text. It provides all the metadata needed to track, route, and manage the message as it passes through the net system. This tracking information is essential for message accountability and ensures messages can be located, verified, and delivered properly. The actual message content (addressee, text, signature) comes after the preamble.
Exam Tip
Preamble = Tracking information. Remember: The preamble contains information needed to track the message (number, precedence, origin, check, etc.), not the message content or recipient details.
Memory Aid
"**P**reamble = **P**rovides **T**racking (think 'P = PT' = Provides Tracking)"
Real-World Application
A formal traffic message preamble might look like: 'NR 15 R W1ABC 10 NEWTON MA 1430Z 15 DEC' - this contains the message number (15), precedence (R for Routine), station of origin (W1ABC), check (10 words), place of origin (Newton, MA), time (1430Z), and date (15 Dec). This tracking information allows the message to be followed through the system.
FCC Part 97.119Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Email addresses are not part of the standard traffic message preamble. Traffic messages use call signs and physical addresses.
Option B: Incorrect. The recipient's address is part of the message body, not the preamble. The preamble contains tracking information.
Option C: Incorrect. Telephone numbers are not part of the standard preamble. The preamble contains message tracking metadata, not contact information.
题目解析
The correct answer is D: Information needed to track the message. The preamble of a formal traffic message contains tracking information that allows the message to be followed through the amateur radio network. This includes message number, precedence, handling instructions, station of origin, check (word count), place of origin, time filed, and date. The preamble is the header information that appears before the actual message text. It provides all the metadata needed to track, route, and manage the message as it passes through the net system. This tracking information is essential for message accountability and ensures messages can be located, verified, and delivered properly. The actual message content (addressee, text, signature) comes after the preamble.
考试技巧
Preamble = Tracking information. Remember: The preamble contains information needed to track the message (number, precedence, origin, check, etc.), not the message content or recipient details.
记忆口诀
**P**reamble = **P**rovides **T**racking (think 'P = PT' = Provides Tracking)
实际应用示例
A formal traffic message preamble might look like: 'NR 15 R W1ABC 10 NEWTON MA 1430Z 15 DEC' - this contains the message number (15), precedence (R for Routine), station of origin (W1ABC), check (10 words), place of origin (Newton, MA), time (1430Z), and date (15 Dec). This tracking information allows the message to be followed through the system.
错误选项分析
Option A: Incorrect. Email addresses are not part of the standard traffic message preamble. Traffic messages use call signs and physical addresses. Option B: Incorrect. The recipient's address is part of the message body, not the preamble. The preamble contains tracking information. Option C: Incorrect. Telephone numbers are not part of the standard preamble. The preamble contains message tracking metadata, not contact information.
知识点
Traffic message, Preamble, Message tracking, Formal message format
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.