Rik Strobbe wrote:

Hello Alberto and Alessandro,

The fact that a RX has a 'lazy' S-meter doesn't mean that it is a poor RX.
A correct S-meter is nice to give exact reports, but what really counts is
the sensitivity and good IM behaviour of a receiver.

Hi Rik,
  yes, of course, you are quite right. But lacking on my side a direct 
experience
of that rig, I used the available data to try to formulate a thumb-estimate.
Ideally, a good S-meter should occasionally flicker on the noise produced by a
50 ohm resistor at room temperature placed across the antenna input. The AGC
action should however enter into play only after a given threshold.
But this would be to ask too much to a receiver. After all, they aren't 
measurement
instrumentation... I think the only calibration the manufactures do is to set 
the
S-meter indication at S9 with 50 uV input at 14 MHz. Any other reading is
totally unreliable.

73  Alberto  I2PHD