Ключевые слова: amplifier, anode, background, bulb, capacitor, cathode, closeup, communication, component, design, detail, device, electric, electrical, electricity, electrode, electron, electronic, electronic tube, element, energy, engineering, equipment, frequency, hardware, inductance, industry, lamp, monochrome, nobody, power, radio, radio station, radio tube, radio wave, radiolamp, repair, retro, science, station, technical, technological, technology, transceiver, transmitter, tube, vacuum, vintage, voltage, wave,