RST System

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Ellicott School

64

R. S. T.  System

CW Uses Readability, Signal Strength, and Tone.

Phone Uses Readability, and Signal Strength.

 

 5 9 9

59

 

 

Readability

1

 Unreadable.
2 Barely readable, occasional words distinguishable.
3 Readable with considerable difficulty.
4 Readable with practically no difficulty.
5 Perfectly Readable.

Signal Strength
1 Faint signal, Barely perceptible.
2 Very weak signal.
3 Weak Signal.
4 Fair Signal.
5 Fairly good signal.
6 Good Signal.
7 Moderately Strong Signal.
8 Strong Signal.
9 Extremely Strong Signal.

Tone
1 Sixty hertz A.C. or less, rough and broad.
2 Very rough A.C., Harsh and broad.
3 Rough A.C. tone, Rectified but not filtered.
4 Rough note, some trace of filtering.
5 Filtered rectified A.C. but strong 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.

   

This site was last updated 01/06/12                    Ellicott Amateur Radio Club makes no endorsement nor has any pecuniary interest in any of these listings.                     © Copyright 2009, 2012 Ellicott Amateur Radio Club.