SINPO code reference

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THE SIO CODE:

SIGNAL STRENGTH                 INTERFERENCE
5=Excellent                      5=Nil
4=Good                           4=Slight
3=Fair                           3=Moderate
2=Poor                           2-Severe
1=Barely Audible                 1=Extreme

OVERALL MERIT
5=Excellent
4=Good
3=Fair
2=Poor
1=Unusable

SINPO CODE

SIGNAL STRENGTH (QSA)            INTERFERENCE (QRM)
5=Excellent                       5=None
4=Good                            4=Slight
3=Fair                            3=Moderate
2=Poor                            2=Severe
1=Barely Audible                  1=Extreme

NOISE - ATMOSPHERIC (QRN)        PROPAGATION DISTURBANCE (QSB)
5=None                            5=None
4=Slight                          4=Slight
3=Moderate                        3=Moderate
2=Severe                          2=Severe
1=Extreme                         1=Extreme

OVERALL MERIT (QRK)

5=Excellent
4=Good
3=Fair
2=Poor
1=Unusable

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