Signal generator "SG-1".
Instruments for adjusting and controlling the PTA.The SG-1 signal generator has been produced since 1954. The device is designed for tuning and adjusting radio receiving equipment in the frequency range from 13 to 330 MHz. Frequency setting error 1.5%. The device operates in the following modes: continuous generation; internal sinusoidal modulation with a frequency of 1000 Hz with a modulation ratio of 10 to 80%; external sinusoidal modulation with frequencies from 100 to 8000 Hz; external pulse modulation by pulses with a duration of 10 microseconds or more. The output voltage at the end of a coaxial cable with a characteristic impedance of 100 ohms varies smoothly from 4 μV to 20 mV. An external voltage divider with a division ratio of 1:10 is attached to the device. The main error in setting the voltage at a frequency of 40 MHz is 25%. The device is powered by 110, 127 and 220 V AC.
