The book is devoted to the basics of building a radio channel for software-configurable radio. Variants of transceiver functional schemes , are considered which potentially ensure the fulfillment of the basic requirements of software-configurable radio - work in an ultra-wide frequency band, regardless of the width of the channel type of modulated signal and speed of information transmission, provided that the requirements of electromagnetic compatibility standards are met. The basics of operation of the components of the hardware of the transceiver for software-configurable radio, such as broadband linearized power amplifier, modulator/demodulator, filters, antenna feeder path elements. are presented. The basic algorithms of software support for the main functional elements of the radio channel. are given The final chapter shows the results of analytical calculations and digital modeling of the receiver with a single frequency conversion and a zero intermediate frequency that best meets the requirements of software-configurable radio. For engineers-developers of radio equipment, it can be useful for masters of radio engineering faculties and graduate students of relevant specialties .