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Readability (R) 001
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| 1 |
Unreadable. |
| 2 |
Barely readable, occasional words heard. |
| 3 |
Readable but very difficult. |
| 4 |
Readable almost no difficulty. |
| 5 |
Perfectly readable. |
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Signal Strength (S)
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| 1 |
Faint Signals, barely preceptible. |
| 2 |
Very weak. |
| 3 |
Weak. |
| 4 |
Fair. |
| 5 |
Fairly good. |
| 6 |
Good. |
| 7 |
Moderately strong. |
| 8 |
Strong. |
| 9 |
Very strong. |
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Tone (T) - CW only
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| 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 |
Rought note, some trace of filtering. |
| 5 |
Filtered rectified AC but strong ripple-modulation. |
| 6 |
Filtered tone, definite trace of ripple modulation. |
| 7 |
Near perfect, trace of ripple modulation. |
| 8 |
Near perfect, slight trace of modulation. |
| 9 |
Perfect. |
If the signal has a characteristic steadyness of crystal control, add the letter "X".
If there is a chirp add the letter "C".
And, if there is a click, add the letter, "K".
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