What it means on the air: A signal report describes how another station’s signal is being received, using a system such as RS/RST or a mode-specific numeric report.
Why operators use it
It is a snapshot at one receiver, antenna, bandwidth, and moment. Readability, strength, tone, noise, fading, and audio quality are related but not identical.
Where the contact goes wrong
Repeating an automatic or “five-nine” report outside a contest can hide a useful problem and gives no evidence of calibrated field strength.
A cleaner operating method
Report what you actually copy, use the convention required by the mode or event, add a concise observation when helpful, and expect the report to change with fading and station settings.
Operating boundary
Use current software and radio documentation, published band plans, applicable licensing rules, and the lowest power that closes the path. A decode, map position, or automated exchange does not by itself prove end-to-end communication.
