Deep Dive: G2C08
The correct answer is C: AR. The prosign sent to indicate the end of a formal message when using CW is AR. 'AR' means 'end of message' and is used to mark the conclusion of a formal message. For amateur radio operators, this is standard CW procedure. Understanding this helps when sending formal messages or traffic. 'AR' is different from 'SK' (end of contact).
Why Other Answers Are Wrong
Option A (SK): Incorrect. 'SK' means 'end of contact' or 'silent key' (deceased operator), not end of message. 'AR' is for end of message. Option B (BK): Incorrect. 'BK' means 'break' (I'm breaking in or go ahead), not end of message. 'AR' is for end of message. Option D (KN): Incorrect. 'KN' means 'go ahead, specific station(s) only,' not end of message. 'AR' is for end of message.
Exam Tip
End of formal message = AR prosign. Think 'A'R = 'A'fter 'R'eport (end of message). 'AR' indicates the end of a formal message. 'SK' is end of contact, 'BK' is break, 'KN' is specific station - all different from 'AR'.
Memory Aid
End of formal message = AR prosign. Think 'A'R = 'A'fter 'R'eport. 'AR' indicates the end of a formal message in CW. Standard prosign for message termination. Different from 'SK' (end of contact).
Real-World Example
You send a formal message via CW. At the end of the message, you send 'AR' to indicate the message is complete. This is different from 'SK' (end of contact) - 'AR' specifically marks the end of a message, while 'SK' marks the end of the entire contact.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G2C
Reference: 2023-2027 Question Pool · G2 - Operating Procedures
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G2C topic.