The article substantiates the possibility of harmful effects on humans and the environment of electromagnetic fields generated by modern wireless communication devices. The main results of work on the creation of a new system for uninterrupted transmission of digital data from a mobile object, in the absence of a GSM signal, are presented. The technique and measuring equipment used to assess the value of the energy flux density during the functioning of the developed receiv-ing-transmitting complex and the compliance of the EMR with permissible values are described. It has been established that the value of the flux density of electromagnetic radiation generated by the elements of the new radio transmission system does not go beyond the permissible values and is no more than 8.45 μW cm-2 - for a base transceiving station and no more than 5.02 μW cm-2 - for the radio module, at a distance of 10 cm from the object of radiation.