It depends on how you have the K3 S Meter calibrated, if you are operating the K3 S Meter in NOR or ABS mode, and if you have calibrated the P3 to your K3. > I have noticed the signal strength in S units on the P3 is lower than the S meter (in peak mode) on the K3. Is this normal? Thanks. Roy Morris W4WFB 73, Lyle KK7P