The study of influence of external harmonic signal on generation in low-voltage vircator with magnetron-injection gun as source of electron beam in squeezed state are carried out. The classical phenomenon of synchronization in the distributed electron-wave system are observed. The possibility of vircator output signal power increasing with the frequency of external signal changing are shown.
$^1$Department of Electronics, Oscillations and Waves, Faculty of Nonlinear Processes Saratov State University named after Tchernyshevskiy N.G., Saratov 410012, Russia
$^2$Scientific and educational center «Nonlinear dynamics of complex systems», Yuri Gagarin State Technical University of Saratov. Saratov 410054, Russia