What does it mean if a signal is reported as "5-9"?

When a signal is reported as "5-9," it indicates an excellent quality signal characterized by two components: the first number refers to signal strength and the second to overall clarity or quality. A "5" in signal strength signifies that the signal is very strong, with no issues in reception, while a "9" in readability means that the signal is heard clearly without any interference or distortion whatsoever.

This reporting system comes from the RST (Readability, Strength, Tone) system used in amateur radio communications, which provides a standardized way to evaluate and communicate the quality of signals. The "5-9" report is the highest possible rating in this system, signaling optimal conditions for the communication link.

The other options, while describing various signal qualities, do not accurately reflect the meaning of "5-9." They suggest signs of weaker signals or issues with clarity, which contrast sharply with the exceptional clarity denoted by a "5-9" report.