Radio receiver with push-button tuning "RSKN".
Tube radios.DomesticThe radio receiver with push-button tuning "RSKN" (conditional name) was developed by IRPA in 1939. "RKSN" is a simple five-lamp, including a rectifier lamp, a superheterodyne receiver, with a push-button setting for a range of 200 ... 2000 m. Power is universal, it does not have an AC or DC power supply and does not have a power transformer. The anode voltage is obtained directly or through a rectifier, the incandescence of the lamps is connected in series.