The Radio modem is designated for GPR remote control. While working with it the operator with a notebook may be in a place protected from external weather conditions, and at the same time another operator moves the antenna by profile. The radio modem can be used only with the control unit. This set consists of a radio modem (RM-2), a carry bag and the radio modem cable. The maximum remoteness in the open area is 100 m. Connection is accomplished through Wi-Fi.