For Roy Lewallen et al: Re Older Post On My db Question
Relative to a receiving antenna's signal: what does the receiver
actually
respond to; power or voltage at its input ?
Bob
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The S-meter is actually a wattmeter. S9 = 50 pico-watts into a
50-ohms receiver input impedance.
It indicates signal strength and strength is watts.
A typical meter is scaled from -54 dB to +50 dB relative to S9.
That's why S9 is roughly half way along the scale - about 50 dB on
each side of it.
-54 dB corresponds roughly to receiver internal noise level.
+50 dB corresponds to receiver overload level.
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Reg, G4FGQ
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