The resistivity rho , thermopower S and Dingle temperature X of dilute KRb alloys have been calculated in the low-temperature limit where impurity scattering dominates. The calculation has been performed at nine pressures between one atmosphere and five kBar. At one atmosphere for a one atomic percent alloy, we obtain rho =1.1 n Omega m, S/T=0.005 mu VK^-1 and X=0.76K. It is found that mass velocity and Darwin relativistic corrections to the potential seen by the electron are important.