The IC7300 S-meter readings vary with the settings of the Preamp1/Preamp2/no_preamp. Wich setting show the the correct value measured at the antenna input? (I did not found anything in the manual) The Flex show exact values independent of the the settings, the KX3 require Preamp1 (as given in the manual) Tnx for answer Guenter DK1RI