The RS, RST and RSV System |
| 1-
Unreadable. 2- Barely readable, occasional words distinguishable. 3- Readable with considerable difficulty. 4- Readable with practically no difficulty. 5- Perfectly readable. |
| 1-
Faint signals, barely perceptible. 2- Very weak signals. 3- Weak signals. 4- Fair signals. 5- Fairly good signals. 6- Good signals. 7- Moderately strong signals. 8- Strong signals. 9- Extremely strong signals. |
| 1-
Sixty cycle AC or less, very rough and broad. 2- Very rough AC, very harsh and broad. 3- Rough AC tone, rectified but not filtered. 4- Rough note, some trace of filtering. 5- Filtered rectified AC but strongly ripple-modulated. 6- Filtered tone, definite trace of ripple modulation. 7- Near pure tone, trace of ripple modulation. 8- Near perfect tone, slight trace of modulation. 9- Perfect tone, no trace of ripple or modulation of any kind. |
| 1- Unreadable. 2- Barely Viewable, just distinguishable. 3- Viewable with considerable difficulty. 4- Viewable with practically no difficulty. 5- Perfectly Viewable . |
| eg., |
| Voice = RS 59 or RS 59+ (if stronger than 9 then put Plus "xx"dB) |
| CW
= RST 599 or RST 599X
or RST 599C X = Rock steady signal ! C = Signal with Chirp |
| SSTV = RSV 595 |