What is meant by “check” in a radiogram header?
The correct answer is A: The number of words or word equivalents in the text portion of the message. In a radiogram header, the 'check' is the word count - the number of words (or word equivalents) in the text portion of the message. This helps verify that the message was received correctly.
The check is important for message accuracy. When you receive a message, you count the words in the text. If your count matches the check number in the preamble, it's a good indication the message was copied correctly. If the counts don't match, there may have been an error in transmission or reception. Word equivalents include groups of numbers, mixed letters and numbers, and other standard counting rules used in formal message handling.
Exam Tip
Check = Word count. Remember: The 'check' in a radiogram is the number of words (or word equivalents) in the message text. It's used to verify accurate reception.
Memory Aid
"**C**heck = **C**ount **W**ords (think 'C = CW' = Count Words)"
Real-World Application
You receive a radiogram with check '10' in the preamble. The message text is: 'ARRIVING TUESDAY 3 PM SIGNED MARY'. You count the words: ARRIVING (1), TUESDAY (2), 3 (3), PM (4), SIGNED (5), MARY (6). Wait - that's only 6 words, but the check says 10. You realize '3 PM' might count as word equivalents differently, or there may have been a copying error. The check helps you verify message accuracy.
FCC Part 97.119Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. The call sign of the originating station is in the preamble, but it's not the 'check.' The check is specifically the word count.
Option C: Incorrect. The list of stations that relayed the message is routing information, not the check. The check is the word count.
Option D: Incorrect. The check is not a box indicating receipt. It's a number representing the word count in the message text.
题目解析
The correct answer is A: The number of words or word equivalents in the text portion of the message. In a radiogram header, the 'check' is the word count - the number of words (or word equivalents) in the text portion of the message. This helps verify that the message was received correctly. The check is important for message accuracy. When you receive a message, you count the words in the text. If your count matches the check number in the preamble, it's a good indication the message was copied correctly. If the counts don't match, there may have been an error in transmission or reception. Word equivalents include groups of numbers, mixed letters and numbers, and other standard counting rules used in formal message handling.
考试技巧
Check = Word count. Remember: The 'check' in a radiogram is the number of words (or word equivalents) in the message text. It's used to verify accurate reception.
记忆口诀
**C**heck = **C**ount **W**ords (think 'C = CW' = Count Words)
实际应用示例
You receive a radiogram with check '10' in the preamble. The message text is: 'ARRIVING TUESDAY 3 PM SIGNED MARY'. You count the words: ARRIVING (1), TUESDAY (2), 3 (3), PM (4), SIGNED (5), MARY (6). Wait - that's only 6 words, but the check says 10. You realize '3 PM' might count as word equivalents differently, or there may have been a copying error. The check helps you verify message accuracy.
错误选项分析
Option B: Incorrect. The call sign of the originating station is in the preamble, but it's not the 'check.' The check is specifically the word count. Option C: Incorrect. The list of stations that relayed the message is routing information, not the check. The check is the word count. Option D: Incorrect. The check is not a box indicating receipt. It's a number representing the word count in the message text.
知识点
Radiogram, Check, Word count, Message verification
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.