On the installations AMBAL-M and MAL in turbulent plasma column the longitudinal current of some kiloampers was measured. The fluctuation spectrum of magnetic field was measured by azimuthal magnetic probes and expansion of plasma current by spatial modes was carried out.

According to the experimental data the amplitudes of currents In, sizes Rn and shifts from axis of simmetry ΔRn for 3rd (40kHz) and 5th (72kHz) basic modes were calculated.