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M0GVZ posted:

"20dB or almost 7 S points...."


6 dB. = 1 S Unit


+60dB. =  -13dB.

+40dB. =  -33dB.

+20dB. =  -53dB.

9SUnit =  -73dB.

7SUnit =  -85dB.

5SUnit =  -97dB.

3SUnit = -109dB.

1Sunit = -121dB.


20 dB = 3.33 S Units.


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