"i3hev, mario held" ) writes:
tim gorman wrote:

You might also ask yourself whether it really matters or not. If your signal
is strong enough to begin driving the AGC to limit the system gain do you
really care what the noise level actually is? ....

But you may very well care for the SNR on an interesting weak signal
which you are trying to listen to, while a strong nearby signal
activates your AGC...

In that case though, you should be worried about that nearby strong signal
dropping the gain of the receiver so you can't hear the weak signal,
the fact that the noise level may increase won't matter because the
lower gain will make the signal unreceivable anyway.

Michael VE2BVW