I'm not picking on Kenwood, but I've measured their S-meter on HF.? Below S-9 each unit is between 3 and 1 dB difference.? It's pretty sad for calibration.? It took the transition to the SDR to have an S-meter measuring anything other than relative indications.? Whether it's 3 dB per S-unit (power) or 6 dB per S-unit (voltage), it is always understood what the meter indicates is in a non-inductive 50-ohm system.? Yes, we finally have S-meters that mean something!