Radio receiver
Date of appearance: 1927
Manufacturer: Electrotechnical Trust
Made in: Moscow, USSR
Materials: metal, glass
Weight: g
Tags: russiamakes, polytech, рдс, россияделаетсама, политех

It operates either as a one-tube regenerative receiver, or as a receiver with a crystal detector. Designed for the wavelength range from 300 to 1800 meters. The radio is capable of receiving stations with capacity of 3 kW and a range of up to 2,500 km. Average anode voltage when using the MICRO lamp does not exceed 40 volts.