G2C07:When sending CW, what does a “C” mean when added to the RST report?
Direct answer summary (2023-2027 NCVEC pool)
The official correct answer for G2C07 is Chirpy or unstable signal.
The key fact is Chirpy or unstable signal. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.