Deep Dive: G2C07
The correct answer is A: Chirpy or unstable signal. When sending CW, a 'C' added to the RST report means chirpy or unstable signal. The 'C' indicates the signal has frequency instability or chirp (frequency variation during transmission). For amateur radio operators, this helps describe signal quality. Understanding this helps when giving accurate signal reports.
Why Other Answers Are Wrong
Option B: Incorrect. 'C' doesn't mean the report was read from an S meter - that's not what 'C' indicates. 'C' is about signal quality, not report source. Option C: Incorrect. 'C' doesn't mean 100% copy - that's not a standard RST meaning. 'C' indicates signal instability. Option D: Incorrect. 'C' doesn't mean key clicks - key clicks would be indicated differently. 'C' specifically means chirpy or unstable signal.
Exam Tip
RST + C = chirpy or unstable signal. Think 'C' = 'C'hirpy or 'C'hanging frequency. The 'C' suffix indicates the signal has frequency instability or chirp. Not about S meter, copy percentage, or key clicks - just signal stability.
Memory Aid
RST + C = chirpy or unstable signal. Think 'C' = 'C'hirpy or 'C'hanging frequency. The 'C' suffix indicates frequency instability or chirp in the signal. Standard RST report suffix.
Real-World Example
You receive a CW signal that sounds like it's changing frequency slightly (chirping). You give a signal report of '599C' - the 'C' indicates the signal is chirpy or unstable. This helps the operator know their signal has frequency instability that needs to be fixed.
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.