Introduction. The relevance of the chosen topic is shown. The calculation of a short-wave radio transmitting antenna installed on a communication structure in the form of a mast on guy wires is considered. The construction site is characterized by high values of wind pressure, seismicity of 9 points and soils of category III.

Goal. The purpose of the calculation is to check the rack and guy ropes of a typical mast provided by the plant, taking into account the characteristics of the construction site and to assess its seismic resistance.

Materials and methods. The calculation was performed in the computer-aided design program SCAD. The seismic impact is set automatically using the capabilities of the software. Graphs of the dynamism coefficient were adopted according to SP 14.13330.2018 Construction in seismic areas.

Results. The mast stand and the guy ropes have the necessary margin of strength and stability and are allowed to be installed on a site with existing climatic conditions. The seismic load had less impact than the combination of wind and ice load.

Conclusions. Wind load and the combination of wind and ice loads are more likely to determine the design of communication structures than seismic effects. The masts are relatively light (the calculated wind forces will be greater than the gravitational forces) and since their mass is more or less linearly distributed over their height, the lateral inertia forces generated by seismic excitations of this distributed mass will not be as significant as the wind forces.