Marked: "Grebe Radio (trade mark) / Richmond Hill, N.Y. / Type CR-5 / 150 to 3000 M / Licensed Under Armstrong Patent 1113149, Oct. 6, 1914 / Licensed Under Marconi Patent 783772, June 28, 1904." This ...
Tube radios have a certain charm. Waiting for them to warm up, that glow of the filaments in a dark room. Tubes ruled radio for many decades. [Uniservo] posted a video about the history and technology ...
Tube radios have a certain charm. Waiting for them to warm up, that glow of the filaments in a dark room. Tubes ruled radio for many decades. [Uniservo] posted a video about the history and technology ...
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