S DBW to S Meter Correlation Table

VOACAP Quick Guide: Home

 

The following table shows how S DBW (median signal power expected at the receiver input terminals) values can be mapped to S meter readings.

There are a few assumptions: the receiver input impedance is 50 Ohms and the transmission lineloss is minimal. Also we assume that the S meter is correctly calibrated. In practice, S meters are mostly imprecise and can only give relative readings.

S DBWW (50 Ohm)dBuVmicrovoltsS Meter
-43.015.00E-0593.9850000.000S9+60 dB
-53.015.00E-0683.9815811.388S9+50 dB
-63.015.00E-0773.985000.000S9+40 dB
-73.015.00E-0863.981581.139S9+30 dB
-83.015.00E-0953.98500.000S9+20 dB
-93.015.00E-1043.98158.114S9+10 dB
-103.015.00E-1133.9850.000S9
-109.031.25E-1127.9625.000S8
-115.053.13E-1221.9412.500S7
-121.077.81E-1315.926.250S6
-127.091.95E-139.903.125S5
-133.114.88E-143.881.563S4
-139.131.22E-14-2.140.781S3
-145.153.05E-15-8.160.391S2
-151.187.63E-16-14.190.195S1

Thank-you

This table has been refined as per suggestions by Ahti OH2RZ.