Smeter – dBm – uV
|The calibration of the S-meter of the radio is often matter of discussion.
Here a summary table of the expected equivalences among different units (assuming S9=50μV):
dBm | P mW | μV (50Ohm) | S meter |
-121 | 7,92E-13 | 0,20 | 1 |
-115 | 3,15E-12 | 0,40 | 2 |
-109 | 1,26E-11 | 0,79 | 3 |
-103 | 5,00E-11 | 1,58 | 4 |
-97 | 1,99E-10 | 3,2 | 5 |
-91 | 7,92E-10 | 6,3 | 6 |
-85 | 3,15E-09 | 12,6 | 7 |
-79 | 1,26E-08 | 25,1 | 8 |
-73 | 0,00000005 | 50 | 9 |
-63 | 0,0000005 | 158 | 9+10 |
-53 | 0,000005 | 500 | 9+20 |
-43 | 0,00005 | 1581 | 9+30 |
-33 | 0,0005 | 5000 | 9+40 |