Low-frequency signal generator '' G3-56 / 1 ''.
Instruments for adjusting and controlling the PTA.The low-frequency signal generator "G3-56 / 1" has been producing the Velikie Luki Radio Plant since 1977. Low-frequency signal generator '' G3-56 / 1 '' is designed for tuning sound-amplifying and receiving radio equipment (three-program subscriber receivers and others) in the frequency range from 20 Hz to 200 kHz.