The paper presents a theoretical analysis of spectral densities of noises generated by charge advection in a vertical electric field and air-Earth current measured on the ground by point and linear sensors. The analysis is restricted only to short time-scales so that the turbulence transporting the change is close to its inertial subrange and can be considered as homogeneous and locally isotropic. Hence, the Kolmogorov scaling law is applied. Next the frozen turbulence approximation is used to obtain frequency spectra. In comparison with point sensors for long antennas, electric noises are considerably damped, especially at high frequencies. ¿ American Geophysical Union 1995