Sorry, this page is not translated yet. Automatic translation used.
The radio battery type "PKV-3" since 1926 produced ETZST. "PKV-3" - Receiver Short Wave 3-lamp assembled according to the 0-V-2 scheme and works in the range from 20 to 200 meters, if desired, it is easily rebuilt to the range of 200 ... 2000 meters, and also using combinations of different circuits the receiver can operate in a higher frequency range, starting from 10 meters. The first cascade is regenerative, the second and the third is a low-frequency amplifier. The regenerator lamp has a resistive heater that allows you to more smoothly approach the threshold of generation.