Vintage 1949 USSR Russia Tetrode Monster Vacuum X-ray Tube Air Cooled GKE-500

New old stock.The Vintage 1949 USSR Russia Tetrode Monster Vacuum X-ray Tube Air Cooled GKE-500 is a rare and unique piece of vintage electronics. This vacuum tube, also known as a tetrode, would have been used in various audio and video equipment from the mid-20th century. With its distinctive design and air-cooled cooling system, this tube adds a touch of nostalgia and authenticity to any vintage electronic collection. Perfect for collectors and enthusiasts of vintage audio and video equipment, this tetrode monster vacuum tube is a special and sought-after item.