Sorry, this page is not translated yet. Automatic translation used.
Since 1929, the battery-type radio receiver "KV-4" has been producing assembly workshops for the former People's Commissariat of Posts and Telegraphs (NKPT). The KV-4 (Short Wave, 4th model) is a regenerative radio receiver, with 2 stages of low-frequency amplification for a wavelength range of 13 ... 110 m. Used at a radio short-wave radio station. Three PT-2 or UB-107 lamps operate in the receiver. Power supply: filament battery 4 and 80 volt anode battery.