DT13 radio data terminal is an end device designed for operation mainly with RF13 transceiver, RF1325/RF1350 and RF2050 mobile sets on fixed frequency and RF1301 handheld transceiver. With RF20 handheld transceivers on fixed frequency. However, it can also be used with other types of transceivers with corresponding levels of communication signals. The purpose of the terminal is to transmit short text messages, formalized messages and navigation data established by the navigation unit internal module. The terminal does not replace standard computing technology but helps operators to prepare and edit various types of text using the keyboard and display messages in field conditions. The design and software make the device easy to operate even in very adverse battle conditions and climate.