Print Strength Bandwidth

RSQ  reporting table

 
    
READABILITY
R5
  95%+
 Perfectly readable 
R4
  80%
 Practically no difficulty, occasional missed characters
R3
  40%
 Considerable difficulty, many missed characters
R2
  20%
 Occasional words distinguishable
R1
  0%
 Undecipherable
 STRENGTH
S9  Very Strong trace
S7  Strong trace
S5   Moderate trace
S3  Weak trace
S1  Barely perceptible trace
 QUALITY
Q9  Clean signal - no visible unwanted sidebar pairs
Q7  One barely visible pair
Q5  One easily visible pair
Q3  Multiple visible pairs
Q1  Splatter over much of the spectrum
 
 

RSQ Readability:  The new descriptive table has a corresponding range of percent readable text. This is consistent with the common practice of providing a percentage figure during a QSO or when responding to the inevitable “HW CPY?” at the end of an over. Currently, a percent readable text figure is often provided to the other station to clarify its readability after the traditional RST report has been sent.

RSQ Strength:  Most HF digital mode programs provide a broad band waterfall or spectrum receive display. As a result, it is common practice for operators to monitor and even decode multiple signals when working a narrow band digital station. Under these conditions, a visible measure of signal trace relative to noise is more meaningful than an S meter reading that averages the strength of all signals in the pass band.

RSQ Quality:  The presence of additional unwanted trace modulation observed on the waterfall or spectrum indicates possible spurious emissions and provides a basis for assessing the quality of digital mode signals. The traditional RST Tone report being designed to evaluate CW signals for the presence of audible hum, key clicks, chirping etc is simply not relevant to digital modes.