AbstractThe nondipole radiation of electrons is considered for any shape of the interplane potential. A concrete analysis and comparison with the radiation of positrons are carried out for a potential of the „inverse parabola”︁ type. It is shown that for the description of the radiation of particles with energyeε ⪅ 10 GeV in the region of the maximum of the spectral distribution it is possible to take into account the few first harmonics of the motion only. This substantially simplifies the calculation, especially for the potentials with complex shape. The diagrams which illustrate the radiation spectrum as a function of the angular width and of the direction of beam incidence in a thin crystal, are depicted. A detailed comparison of the results with available experimental data