Codes and abbreviations

7E2 Recall the meaning of the RST code, the number of divisions of each of the three items, and their order of merit

In the amateur radio world the RST convention means Readability Strength Tone.

The readability section has 5 levels where 1 in unreadable to 5 which is totally readable.

The Strength is referring to the Signal strength which had 9 levels level 1 meaning faint, barely perceptible to level 9 meaning Very Strong.

The Tone is referring to CW tone and has 9 levels level 1 meaning Extremely rough note through to level 9 meaning a pure DC note.

The origin of some of the text on this page is from the RSGB with additions by the web master