In this work, a diagram of the developed amplifier for laboratory work. It will be used for laboratory work on the subject “Microwave Devices and Antennas” for taking antenna radiation patterns, determining the principles of operation of waveguide devices. The use of the developed device will allow not only to gain in cost compared to analogs, but also to increase the maintainability in case of breakdown due to its simple design. The article also presents the results of the experimental testing of the device, its cost and additional capabilities.